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{{Short description|Russian-American engineer (1888–1982)}}
{{Short description|Russian-American engineer (1888–1982)}}

{{Infobox engineer
{{Infobox engineer
| name = Vladimir K. Zworykin
| name = Vladimir K. Zworykin
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| caption = Vladimir Zworykin, {{circa|1956}}
| caption = Vladimir Zworykin, {{circa|1956}}
| birth_name = Vladimir Kosmich Zworykin
| birth_name = Vladimir Kosmich Zworykin
| birth_date = {{Birth date|1888|7|29}}
| birth_date = 1888 or 1889{{efn|name=birthdate}}
| birth_place = [[Murom]], [[Vladimir Governorate]], [[Russian Empire]]
| birth_place = [[Murom]], [[Vladimir Governorate]], [[Russian Empire]]
| death_date = {{death date and age|1982|7|29|1888|7|29}}
| death_date = {{death date|1982|7|29}} (aged 92–94)
| death_place = [[Princeton, New Jersey]], U.S.
| death_place = [[Princeton, New Jersey]], U.S.
| death_cause =
| death_cause =
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| citizenship = Russian, American
| citizenship = Russian, American
| other_names =
| other_names =
| education = [[Saint Petersburg State Institute of Technology]]<br>[[ESPCI]]<br>[[University of Pittsburgh]] (PhD)
| education = [[Saint Petersburg State Institute of Technology]]<br />[[ESPCI]]<br />[[University of Pittsburgh]] (PhD)
| employer =
| employer =
| occupation =
| occupation =
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| significant_awards = [[IRE Medal of Honor]], 1951, [[IEEE Edison Medal]], 1952
| significant_awards = [[IRE Medal of Honor]], 1951, [[IEEE Edison Medal]], 1952
}}
}}

'''Vladimir Kosmich Zworykin''' ({{lang-ru|Влади́мир Козьми́ч Зворы́кин}}, ''Vladimir Koz'mich Zvorykin''; {{OldStyleDate|July 29|1888|July 17}}{{spaced ndash}}July 29, 1982)<ref>The birth year has been recently revised from 1889 to 1888 according to the metric book of Sretenskaya Church of the town of [[Murom]] (later placed in the archive of Murom ZAGS). The metric book was brought into attention by V. Ya. Chernushev, the birth date of Zworykin was revised by K. M. Velembovskaya, journal "Новая и новейшая история" (Modern and Contemporary History) № 5 2009.</ref><ref name="nytimes-obit">{{cite news |title=Vladimir Zworykin, Television Pioneer, Dies at 92 |url=https://www.nytimes.com/1982/08/01/obituaries/vladimir-zworykin-television-pioneer-dies-at-92.html |quote=Dr. Vladimir Kosma Zworykin, a Russian-born scientist whose achievements were pivotal to the development of television, died Thursday [i.e., July 29, 1982] at the Princeton (N.J.) Medical Center. He was 92 years old and lived in Princeton. |work=[[The New York Times]] |date=August 1, 1982 |access-date=November 2, 2022 |last=Thomas |first=Robert McG. Jr. |author-link=Robert McG. Thomas Jr. |at=sec. 1, p. 32}}</ref> was a Russian-American inventor, engineer, and pioneer of [[television]] technology. Zworykin invented a television transmitting and receiving system employing [[cathode ray tubes]]. He played a role in the practical development of television from the early thirties, including charge storage-type tubes, [[infrared]] image tubes and the [[electron microscope]].<ref>{{cite web |url=http://www.ieeeghn.org/wiki/index.php/Oral-History:Vladimir_Zworykin |title=Vladimir Zworykin Oral History |author=IEEE Global History Network |year=2011 |publisher=IEEE History Center |access-date=8 July 2011}}</ref>
'''Vladimir Kosma Zworykin'''{{efn|name=name|{{langx|ru|Влади́мир Козьми́ч Зворы́кин|translit=Vladimir Koz'mich Zvorykin}};<ref>{{cite sign |title=[[c:File:Муром школа 16 памятная табличка.JPG|Владимир Козьмич Зворыкин]] |type=Plaque outside school |location=[[Murom]], Russia |publisher=Murom School No. 16 }}</ref> or with the patronymic as ''Kosmich''; or {{langx|ru|Кузьмич|translit=Kuz'mich|label=none}}.<ref name="bse">{{cite encyclopedia |encyclopedia=Большая Советская Энциклопедия ([[Great Soviet Encyclopedia]]) |lang=ru |edition=3rd |year=1972 |title=Зворыкин Владимир Кузьмич |url=http://bse.sci-lib.com/article045085.html |quote='''Зворыкин''' (Zworykin) Владимир Кузьмич (р.30.7.1889, Муром, ныне Владимирской области)...}}</ref> Zworykin anglicized his name to '''''Vladimir Kosma Zworykin''''',<ref>{{cite book |page=iv |title=Photocells and their application |edition=2nd |last1=Zworykin |first1=Vladimir Kosma |last2=Wilson |first2=Earl DeWitt |year=1934 |publisher=John Wiley & Sons |location=New York |hdl=2027/wu.89074766767?urlappend=%3Bseq=8 |url=https://hdl.handle.net/2027/wu.89074766767?urlappend=%3Bseq=8 |via=HathiTrust}}</ref><ref name="britannica" /> replacing the [[Eastern_Slavic_naming_customs#Patronymics|patronymic]] with the name ''Kosma'' as a [[middle name]], and using the nonstandard transliteration ''Zworykin''.<ref name="bse" /> }} (1888/1889{{efn|name=birthdate|Zworykin himself stated his birth date inconsistently (even after accounting for [[Old Style and New Style dates]]) as various days of June or July, 1888 or 1889.{{r|Abramson 1995|p=212}} Other sources show various similar birth dates.<ref>The birth year is 1888 according to the {{ill|metrical book|ru|Метрическая книга}} (similar to a [[parish register]]) of Sretenskaya Church of the town of [[Murom]] (later placed in the archive of Murom ZAGS). The metrical book was brought into attention by V. Ya. Chernushev. The birth date of Zworykin was revised by K. M. Velembovskaya, journal "Новая и новейшая история" (Modern and Contemporary History) № 5 2009.</ref><ref name="nytimes-obit" /><ref name="britannica" /><ref name="bse" />}}{{spaced ndash}}July 29, 1982<ref name="nytimes-obit">{{cite news |title=Vladimir Zworykin, Television Pioneer, Dies at 92 |url=https://www.nytimes.com/1982/08/01/obituaries/vladimir-zworykin-television-pioneer-dies-at-92.html |quote=Dr. Vladimir Kosma Zworykin, a Russian-born scientist whose achievements were pivotal to the development of television, died Thursday [i.e., July 29, 1982] at the Princeton (N.J.) Medical Center. He was 92 years old and lived in Princeton. ... Dr. Zworykin was born July 30, 1889, in the small town of Murom on the Oka River... |work=The New York Times |date=August 1, 1982 |access-date=November 2, 2022 |last=Thomas |first=Robert McG. Jr. |author-link=Robert McG. Thomas Jr. |at=sec. 1, p. 32}}</ref>) was a Russian-American inventor, engineer, and pioneer of [[television]] technology. Zworykin invented a television transmitting and receiving system employing [[cathode-ray tube]]s. He played a role in the practical development of television from the early thirties, including charge storage-type tubes, [[infrared]] image tubes and the [[electron microscope]].<ref>{{cite web |url=http://www.ieeeghn.org/wiki/index.php/Oral-History:Vladimir_Zworykin |title=Vladimir Zworykin Oral History |author=IEEE Global History Network |year=2011 |publisher=IEEE History Center |access-date=8 July 2011}}</ref>


==Early life and education==
==Early life and education==
Vladimir Kosmich Zworykin was born in [[Murom]], Russia, in 1888, on July 29 (July 17 in the [[Julian calendar]]), to the family of a prosperous [[merchant|merchants]]. He had a relatively calm upbringing, and he rarely saw his father except on religious holidays.
Vladimir Zworykin was born in [[Murom]], Russia, in 1888 or 1889, to the family of a prosperous [[merchant|merchants]]. He had a relatively calm upbringing, and he rarely saw his father except on religious holidays.

⚫
He studied at the [[St. Petersburg Institute of Technology]], under [[Boris Rosing]]. He helped Rosing with experimental work on television in the basement of Rosing's private lab at the School of Artillery of [[Saint Petersburg]]. They worked on the problem of "electrical telescopy," something Zworykin had never heard of before. At this time, electrical telescopy (or television as it was later called) was just a dream. Zworykin did not know that others had been studying the idea since the 1880s, or that Professor Rosing had been working on it in secret since 1902 and had made excellent progress. Rosing had filed his first patent on a television system in 1907, featuring a very early [[cathode-ray tube]] as a receiver, and a mechanical device as a transmitter. Its demonstration in 1911, based on an improved design, was the world's first demonstration of TV of any kind.<ref name="Abramson 1995">{{cite book|last=Abramson|first=Albert|title=Zworykin, Pioneer of Television|year=1995|publisher=University of Illinois Press|isbn=0-252-02104-5 |url=https://archive.org/details/zworykinpioneero0000abra |url-access=registration}}</ref>


Zworykin married Tatiana Vasilieva in 1916, they had two daughters (the couple separated in the early 1930s).<ref>{{cite web | title=Субботина Е. А. Первая семья В. К. Зворыкина |trans-title=First family of Zworykin | website=Муромский историко-художественный музей | url=https://museum-murom.ru/scientific-work/materialy-konferencij-muzeya/ezhegodnaya-otchetnaya-konferenciya/sbornik-konferencii-2015/subbotina-e.-a.-pervaya-semya-v.k.zvorykina | language=ru}}</ref>
⚫
He studied at the [[St. Petersburg Institute of Technology]], under [[Boris Rosing]]. He helped Rosing with experimental work on television in the basement of Rosing's private lab at the School of Artillery of [[Saint Petersburg]]. They worked on the problem of "electrical telescopy," something Zworykin had never heard of before. At this time, electrical telescopy (or television as it was later called) was just a dream. Zworykin did not know that others had been studying the idea since the 1880s, or that Professor Rosing had been working on it in secret since 1902 and had made excellent progress. Rosing had filed his first patent on a television system in 1907, featuring a very early [[cathode ray tube]] as a receiver, and a mechanical device as a transmitter. Its demonstration in 1911, based on an improved design, was the world's first demonstration of TV of any kind.<ref name="Abramson 1995">{{cite book|last=Abramson|first=Albert|title=Zworykin, Pioneer of Television|year=1995|publisher=[[University of Illinois Press]]|isbn=0-252-02104-5}}</ref>


== Career ==
== Career ==
Zworykin graduated in 1912. He then studied X-rays under professor [[Paul Langevin]] in Paris.<ref name="Abramson 1995" /> During [[World War I]], Zworykin was enlisted and served in the Russian Signal Corps. He then worked testing radio equipment that was being produced for the Russian Army. Zworykin left Russia for the [[United States]] in 1918 during the [[Russian Civil War]]. He left through [[Siberia]], travelling north on the [[River Ob]] to the [[Arctic Ocean]] as part of an expedition led by Russian scientist [[Innokenty P. Tolmachev]], eventually arriving in the US at the end of 1918. He returned to [[Omsk]], then capital of [[Alexander Kolchak|Admiral Kolchak]]'s government in 1919, via [[Vladivostok]], then to the United States again on official duties from the [[White movement|Omsk government]]. These duties ended with the collapse of the [[White movement]] in Siberia at the death of Kolchak. Zworykin then decided to remain permanently in the US.
Zworykin graduated in 1912. He then studied X-rays under professor [[Paul Langevin]] in Paris.<ref name="Abramson 1995" /> During [[World War I]], Zworykin was enlisted and served in the Russian Signal Corps. He then worked testing radio equipment that was being produced for the Russian Army. Zworykin left Russia for the [[United States]] in 1918 during the [[Russian Civil War]]. He left through [[Siberia]], travelling north on the [[River Ob]] to the [[Arctic Ocean]] as part of an expedition led by Russian scientist [[Innokenty P. Tolmachev]], eventually arriving in the U.S. at the end of 1918. He returned to [[Omsk]], then capital of [[Alexander Kolchak|Admiral Kolchak]]'s government in 1919, via [[Vladivostok]], then to the United States again on official duties from the [[White movement|Omsk government]]. These duties ended with the collapse of the [[White movement]] in Siberia at the death of Kolchak. Zworykin then decided to remain permanently in the United States.


[[Image:Zworykin kinescope 1929.jpg|upright|thumb|Zworykin demonstrates electronic television (1929).]]
[[Image:Zworykin kinescope 1929.jpg|upright|thumb|Zworykin demonstrates electronic television (1929).]]
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Once in the U.S., Zworykin found work at the [[Westinghouse Electric (1886)|Westinghouse]] laboratories in [[Pittsburgh, Pennsylvania|Pittsburgh]] where he eventually had an opportunity to engage in television experiments.
Once in the U.S., Zworykin found work at the [[Westinghouse Electric (1886)|Westinghouse]] laboratories in [[Pittsburgh, Pennsylvania|Pittsburgh]] where he eventually had an opportunity to engage in television experiments.


Zworykin applied for a television patent in the US in 1923. He summarized the resulting invention in two patent applications. The first, entitled "Television Systems", was filed on December 29, 1923, and was followed by a second application in 1925 of essentially the same content, but with minor changes and the addition of a Paget-type [[RGB]] raster screen for color transmission and reception.<ref name="US1691324">{{cite web|last=Zworykin|first=Vladimir|date=November 13, 1928|title=Television System|url=https://patents.google.com/patent/US1691324A/en|url-status=live|access-date=2009-07-28|work=Patent No. 1,691,324|publisher=United States Patent Office|orig-year=filed 1925}}</ref> He was awarded a patent for the 1925 application in 1928,<ref name="US1691324" /> and two patents for the 1923 application that was divided in 1931,<ref name="US2022450" /><ref name="US2141059" /> although the equipment described was never successfully demonstrated.<ref name="Schatzkin1">Schatzkin, Paul (2002), ''The Boy Who Invented Television''. Silver Spring, Maryland: Teamcom Books, pp. 111-8. {{ISBN|1-928791-30-1}}.</ref><ref name="Abramson1">Abramson, Albert.'' The History of Television, 1880 to 1941''. (1987). Jefferson, NC: McFarland & Co., p. 209 {{ISBN|0-89950-284-9}}.</ref><ref name="Abramson 1995" />{{rp|51,2}} Zworykin described cathode ray tubes as both transmitter and receiver. The operation, whose basic thrust was to ''prevent'' the emission of electrons between scansion cycles, was reminiscent of [[Alan Archibald Campbell-Swinton|A. A. Campbell Swinton]]'s proposal published in ''[[Nature (journal)|Nature]]'' in June 1908.<ref>A. A. CAMPBELL SWINTON (1908) [http://www.nature.com/nature/journal/v78/n2016/abs/078151a0.html ''Distant Electric Vision (first paragraph)'']</ref><ref>A. A. CAMPBELL SWINTON (1908) [http://www.nature.com/nature/journal/v78/n2016/pdf/078151a0.pdf ''Distant Electric Vision (pdf)'']</ref>
Zworykin applied for a television patent in the U.S. in 1923. He summarized the resulting invention in two patent applications. The first, entitled "Television Systems", was filed on December 29, 1923, and was followed by a second application in 1925 of essentially the same content, but with minor changes and the addition of a Paget-type [[RGB]] raster screen for color transmission and reception.<ref name="US1691324">{{cite patent|invent1=Zworykin, Vladimir|gdate=November 13, 1928|title=Television System|country=US|status=Patent|number=1691324|fdate=1925}}</ref> He was awarded a patent for the 1925 application in 1928,<ref name="US1691324" /> and two patents for the 1923 application that was divided in 1931,<ref name="US2022450" /><ref name="US2141059" /> although the equipment described was never successfully demonstrated.<ref>{{cite book | last=Schatzkin | first=Paul | title=The Boy who Invented Television | publisher=Teamcom Books | publication-place=Silver Spring, Md | date=2002 | isbn=1-928791-30-1 | pages=111–8}}</ref><ref>{{cite book | last=Abramson | first=Albert | title=The History of Television, 1880 to 1941 | publisher=McFarland | publication-place=Jefferson, N.C | date=1987 | isbn=0-89950-284-9 | page=209}}</ref><ref name="Abramson 1995" />{{rp|51,2}} Zworykin described cathode-ray tubes as both transmitter and receiver. The operation, whose basic thrust was to ''prevent'' the emission of electrons between scansion cycles, was reminiscent of [[Alan Archibald Campbell-Swinton|A. A. Campbell Swinton]]'s proposal published in ''[[Nature (journal)|Nature]]'' in June 1908.<ref>{{cite journal | last=Swinton | first=A. a. Campbell | title=Distant Electric Vision | journal=Nature (Journal) | volume=78 | issue=2016 |year=1908 | issn=1476-4687 | doi=10.1038/078151a0 | pages=151 | bibcode=1908Natur..78..151S | url=https://www.nature.com/articles/078151a0.pdf }}</ref>


[[Image:Zworykin patent (1923).jpg|thumb|left|Drawing from Zworykin's 1923 patent application ''Television System''.<ref name="US2022450" /><ref name="US2141059" />]]
[[Image:Zworykin patent (1923).jpg|thumb|left|Drawing from Zworykin's 1923 patent application ''Television System''.<ref name="US2022450" /><ref name="US2141059" />]]


The demonstration given (sometime in late 1925 or early 1926) by Zworykin was far from a success with the Westinghouse management, even though it showed the possibilities inherent in a system based on the cathode ray tube. He was told by management to "devote his time to more practical endeavours," yet continued his efforts to perfect his system.
The demonstration given (sometime in late 1925 or early 1926) by Zworykin was far from a success with the Westinghouse management, even though it showed the possibilities inherent in a system based on the cathode-ray tube. He was told by management to "devote his time to more practical endeavours," yet continued his efforts to perfect his system.


As attested by his doctoral dissertation of 1926, earning him a [[PhD]] from the [[University of Pittsburgh]], his experiments were directed at improving the output of photoelectric cells. There were, however, limits to how far one could go along these lines, and so, in 1929, Zworykin returned to vibrating mirrors and facsimile transmission, filing patents describing these. At this time, however, he was also experimenting with an improved cathode ray receiving tube, filing a patent application for this in November 1929, and introducing the new receiver that he named the "kinescope", reading a paper two days later at a convention of the [[Institute of Radio Engineers]].
As attested by his doctoral dissertation of 1926, earning him a [[PhD]] from the [[University of Pittsburgh]], his experiments were directed at improving the output of photoelectric cells. There were, however, limits to how far one could go along these lines, and so, in 1929, Zworykin returned to vibrating mirrors and facsimile transmission, filing patents describing these. At this time, however, he was also experimenting with an improved cathode ray receiving tube, filing a patent application for this in November 1929, and introducing the new receiver that he named the "kinescope", reading a paper two days later at a convention of the [[Institute of Radio Engineers]].
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Having developed the prototype of the receiver by December, Zworykin met [[David Sarnoff]],<ref name=":01" /> who eventually hired him and put him in charge of television development for the [[Radio Corporation of America]] (RCA) at its factories and laboratories in [[Camden, New Jersey]].
Having developed the prototype of the receiver by December, Zworykin met [[David Sarnoff]],<ref name=":01" /> who eventually hired him and put him in charge of television development for the [[Radio Corporation of America]] (RCA) at its factories and laboratories in [[Camden, New Jersey]].


The move to the RCA's Camden laboratories occurred in the spring of 1930, and the difficult task of developing a transmitter could begin. There was an in-house evaluation in mid-1930, where the kinescope performed well (but with only 60 lines definition),<ref name=":01">{{cite web |title=Story of Television, The |url=https://archive.org/details/StoryofT1956 |access-date=8 January 2020 |date=1956}}</ref> and the transmitter was still of a mechanical type. A "breakthrough" would come when the Zworykin team decided to develop a new type of cathode ray transmitter, one described in the French and British patents of 1928 priority by the Hungarian inventor [[Kálmán Tihanyi]] whom the company had approached in July 1930, after the publication of his patents in England and France. This was a curious design, one where the scanning electron beam would strike the photoelectric cell from the same side where the optical image was cast. Even more importantly, it was a system characterized by an operation based on an entirely new principle, the principle of the accumulation and storage of charges during the entire time between two scansions by the cathode-ray beam.
The move to the RCA's Camden laboratories occurred in the spring of 1930, and the difficult task of developing a transmitter could begin. There was an in-house evaluation in mid-1930, where the kinescope performed well (but with only 60 lines definition),<ref name=":01">{{cite web |title=Story of Television, The |url=https://archive.org/details/StoryofT1956 |access-date=8 January 2020 |year=1956}}</ref> and the transmitter was still of a mechanical type. A "breakthrough" would come when the Zworykin team decided to develop a new type of cathode ray transmitter, one described in the French and British patents of 1928 priority by the Hungarian inventor [[Kálmán Tihanyi]] whom the company had approached in July 1930, after the publication of his patents in England and France. This was a curious design, one where the scanning electron beam would strike the photoelectric cell from the same side where the optical image was cast. Even more importantly, it was a system characterized by an operation based on an entirely new principle, the principle of the accumulation and storage of charges during the entire time between two scansions by the cathode-ray beam.


[[File:Vladimir Zworykin and historic TV tubes.jpg|thumb|Zworykin and some of the historic camera tubes he developed]]
[[File:Vladimir Zworykin and historic TV tubes.jpg|thumb|Zworykin and some of the historic camera tubes he developed]]
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"[t]he image iconoscope, presented in 1934, was a result of a collaboration between Zworykin and RCA's licensee [[Telefunken]]. ... In 1935 the [[Reichspost]] started the public broadcastings using this tube and applying a 180 lines system."<ref name="Vries" />
"[t]he image iconoscope, presented in 1934, was a result of a collaboration between Zworykin and RCA's licensee [[Telefunken]]. ... In 1935 the [[Reichspost]] started the public broadcastings using this tube and applying a 180 lines system."<ref name="Vries" />


RCA filed an interference suit against rival television scientist [[Philo Farnsworth]], claiming Zworykin's 1923 patent had priority over Farnsworth's design, despite the fact it could present no evidence that Zworykin had actually produced a functioning transmitter tube before 1931. Farnsworth had lost two interference claims to Zworykin in 1928, but this time he prevailed and the [[U.S. Patent Office]] rendered a decision in 1934 awarding priority of the invention of the image dissector to Farnsworth. RCA lost a subsequent appeal, but litigation over a variety of issues continued for several years with Sarnoff finally agreeing to pay Farnsworth royalties.<ref name="Postman">{{cite magazine | url = http://www.time.com/time/time100/scientist/profile/farnsworth.html | archive-url = https://web.archive.org/web/20000531100005/http://www.time.com/time/time100/scientist/profile/farnsworth.html | url-status = dead | archive-date = May 31, 2000 | author-link = Neil Postman | last = Postman | first= Neil | title = The ''Time'' 100: Scientists & Thinkers: Philo Farnsworth | magazine = [[Time (magazine)|Time]] | date = March 29, 1999 | access-date = July 28, 2009}}</ref><ref name="Burns">{{cite book
RCA filed an interference suit against rival television scientist [[Philo Farnsworth]], claiming Zworykin's 1923 patent had priority over Farnsworth's design, despite the fact it could present no evidence that Zworykin had actually produced a functioning transmitter tube before 1931. Farnsworth had lost two interference claims to Zworykin in 1928, but this time he prevailed and the [[U.S. Patent Office]] rendered a decision in 1934 awarding priority of the invention of the image dissector to Farnsworth. RCA lost a subsequent appeal, but litigation over a variety of issues continued for several years with Sarnoff finally agreeing to pay Farnsworth royalties.<ref>{{cite magazine | url = http://www.time.com/time/time100/scientist/profile/farnsworth.html | archive-url = https://web.archive.org/web/20000531100005/http://www.time.com/time/time100/scientist/profile/farnsworth.html | url-status = dead | archive-date = May 31, 2000 | author-link = Neil Postman | last = Postman | first= Neil | title = The ''Time'' 100: Scientists & Thinkers: Philo Farnsworth | magazine = [[Time (magazine)|Time]] | date = March 29, 1999 | access-date = July 28, 2009}}</ref><ref>{{cite book
| title = Television: an international history of the formative years
| title = Television: an international history of the formative years
| author = Burns, R. W.
| author = Burns, R. W.
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| page = 366
| page = 366
| url = https://books.google.com/books?id=gZcwhVyiMqsC&q=Dieckmann%20Hell%20image-dissector-tube%20aperture%20Farnsworth&pg=PA366
| url = https://books.google.com/books?id=gZcwhVyiMqsC&q=Dieckmann%20Hell%20image-dissector-tube%20aperture%20Farnsworth&pg=PA366
}}</ref> Zworykin received a patent in 1928 for a color transmission version of his 1923 patent application;<ref name="US1691324" /> he also divided his original application in 1931, receiving a patent in 1935,<ref name="US2022450">[https://patents.google.com/patent/US2022450 Zworykin, Vladimir K., Television System]. Patent No. 2022450, U.S. Patent Office. Filed 1923-12-29, issued November 26, 1935. Retrieved May 10, 2010.</ref> while a second one was eventually issued in 1938<ref name="US2141059">[https://patents.google.com/patent/US2141059A/en Zworykin, Vladimir K., Television System]. Patent No. 2141059, U.S. Patent Office. Filed 1923-12-29, issued December 20, 1938. Retrieved November 19, 2009.</ref> by the Court of Appeals on a non-Farnsworth-related interference case,<ref name="Times1938">"Wins Basic Patent in Television Field," ''[[The New York Times]]'', December 22, 1938, p. 38:6. Retrieved March 4, 2010.</ref> and over the objection of the Patent Office.<ref name="FarnWhoWhat">[http://www.farnovision.com/chronicles/tfc-who_invented_what.html Schatzkin, Paul (1977, 2001), "Who Invented What -- and When??"], ''The Farnsworth Chronicles''. Retrieved November 19, 2009.</ref>
}}</ref> Zworykin received a patent in 1928 for a color transmission version of his 1923 patent application;<ref name="US1691324" /> he also divided his original application in 1931, receiving a patent in 1935,<ref name="US2022450">{{cite patent|country=US|number=2022450 |invent1=Zworykin, Vladimir K.|title=Television System|status=Patent|fdate=1923-12-29|gdate=November 26, 1935}}</ref> while a second one was eventually issued in 1938<ref name="US2141059">{{cite patent|country=US|number=2141059 |invent1=Zworykin, Vladimir K., |title=Television System|status=Patent|fdate=1923-12-29|gdate=December 20, 1938}}</ref> by the Court of Appeals on a non-Farnsworth-related interference case,<ref>{{cite news |title=Wins Basic Patent in Television Field |newspaper=[[The New York Times]] |date=December 22, 1938 |page=38:6 }}</ref> and over the objection of the Patent Office.<ref>{{cite web | title=Who Invented Television? | website=The Farnsworth Chronicles | url=https://www.farnovision.com/chronicles/tfc-who_invented_what.html|year=2001}}</ref>


==Later life==
==Later life==
Zworykin married for a second time in 1951. His wife was Katherine Polevitzky (1888-1985), a Russian-born professor of bacteriology at the [[University of Pennsylvania]]. It was the second marriage for both. The ceremony was in [[Burlington, New Jersey]].<ref>{{cite news |title=Married |url=http://www.time.com/time/magazine/article/0,9171,821935,00.html |archive-url=https://web.archive.org/web/20090806074709/http://www.time.com/time/magazine/article/0,9171,821935,00.html |url-status=dead |archive-date=August 6, 2009 |quote=Vladimir Zworykin, 62, Russian-born, Russian-trained physicist, the "father of television," who developed the iconoscope (eye) of the TV camera in 1923, now laments: "We never dreamed of Howdy Doody on Television — we always thought television would find its highest value in science and industry"; and Katherine Polevitzky, 62, Russian-born professor of bacteriology at the University of Pennsylvania; both for the second time; in [[Burlington, New Jersey]]. |publisher=[[Time (magazine)|Time]] |date= November 26, 1951 |access-date=2008-04-27 }}</ref> A photographic record of his marriage and worldwide tour can be viewed online.<ref>{{cite web|url=http://framemaster.tripod.com/index-2.html|title=1951 Dr.Zworykin Television Inventor Weds Dr. Katherine Polevitzky|first=Steve|last=Restelli|website=framemaster.tripod.com}}</ref>
Zworykin married for a second time in 1951. His wife was Katherine Polevitzky (1888–1985), a Russian-born professor of bacteriology at the [[University of Pennsylvania]]. It was the second marriage for both. The ceremony was in [[Burlington, New Jersey]].<ref>{{cite magazine |title=Married |url=http://www.time.com/time/magazine/article/0,9171,821935,00.html |archive-url=https://web.archive.org/web/20090806074709/http://www.time.com/time/magazine/article/0,9171,821935,00.html |url-status=dead |archive-date=August 6, 2009 |quote=Vladimir Zworykin, 62, Russian-born, Russian-trained physicist, the "father of television," who developed the iconoscope (eye) of the TV camera in 1923, now laments: "We never dreamed of Howdy Doody on Television — we always thought television would find its highest value in science and industry"; and Katherine Polevitzky, 62, Russian-born professor of bacteriology at the University of Pennsylvania; both for the second time; in [[Burlington, New Jersey]]. |magazine=Time |date= November 26, 1951 |access-date=2008-04-27 }}</ref> A photographic record of his marriage and worldwide tour can be viewed online.<ref>{{cite web|url=http://framemaster.tripod.com/index-2.html|title=1951 Dr.Zworykin Television Inventor Weds Dr. Katherine Polevitzky|first=Steve|last=Restelli|website=framemaster.tripod.com}}</ref>
He retired in 1954.
He retired in 1954.


New frontiers in [[medical engineering]] and [[biological engineering]] appealed to him, and he became a founder and first president of the [[International Federation for Medical and Biological Engineering]]. The Federation continues to honor outstanding research engineering with a ''Zworykin Award'', the prize being travelling funds to the award's presentation at a World Congress.<ref>[http://www.ifmbe.org International Federation for Medical and Biological Engineering]</ref>
New frontiers in [[medical engineering]] and [[biological engineering]] appealed to him, and he became a founder and first president of the [[International Federation for Medical and Biological Engineering]]. The Federation continues to honor outstanding research engineering with a ''Zworykin Award'', the prize being travelling funds to the award's presentation at a World Congress.<ref>{{Cite web|url=https://ifmbe.org/|title=IFMBE &#124; International Federation for Medical and Biological Engineering}}</ref>


==Death==
==Death==
Line 92: Line 96:


==Honors==
==Honors==
[[Image:Zworykin1931iconoscope.png|thumb|right|Vladimir Zworykin's patent diagram of an iconoscope, 1931,<ref name="US2021907">{{Cite patent|number=US2021907A|title=Method of and apparatus for producing images of objects|gdate=1935-11-26|invent1=Zworykin|inventor1-first=Vladimir K.|url=https://patents.google.com/patent/US2021907A/en?oq=US2021907A}}</ref> with an apparatus similar to the camera part.<ref name=US2022450/><ref name=US2141059/>]]
[[Image:Zworykin1931iconoscope.png|thumb|right|Vladimir Zworykin's patent diagram of an iconoscope, 1931,<ref>{{Cite patent|number=US2021907A|title=Method of and apparatus for producing images of objects|gdate=1935-11-26|invent1=Zworykin|inventor1-first=Vladimir K.|url=https://patents.google.com/patent/US2021907A/en?oq=US2021907A}}</ref> with an apparatus similar to the camera part.<ref name=US2022450/><ref name=US2141059/>]]
Throughout his steady rise in rank, Zworykin remained involved in the many important developments of RCA and received several outstanding honours, including, in 1934, the [[Morris Liebmann Memorial Prize]] from the [[Institute of Radio Engineers]].<ref name="IEEE-Liebmann-Award-Recipients">{{cite web|url=http://www.ieee.org/documents/liebmann_rl.pdf |title=IEEE Morris N. Liebmann Memorial Award Recipients |publisher=[[IEEE]] |access-date=March 14, 2011}}</ref>
Throughout his steady rise in rank, Zworykin remained involved in the many important developments of RCA and received several outstanding honours, including, in 1934, the [[Morris Liebmann Memorial Prize]] from the [[Institute of Radio Engineers]].<ref>{{cite web|url=http://www.ieee.org/documents/liebmann_rl.pdf |archive-url=https://web.archive.org/web/20110629020713/http://www.ieee.org/documents/liebmann_rl.pdf |url-status=dead |archive-date=June 29, 2011 |title=IEEE Morris N. Liebmann Memorial Award Recipients |publisher=IEEE |access-date=March 14, 2011}}</ref>


In 1941, he was elected to the [[American Academy of Arts and Sciences]].<ref>{{Cite web |title=Vladimir Kosma Zworykin |url=https://www.amacad.org/person/vladimir-kosma-zworykin |access-date=2023-03-06 |website=American Academy of Arts & Sciences |date=9 February 2023 |language=en}}</ref>
⚫
He was awarded the [[Howard N. Potts Medal]] from [[The Franklin Institute]] in 1947.<ref name="PottsMedal_Laureates">{{cite web |url=http://www.fi.edu/winners/show_results.faw?gs=&ln=&fn=&keyword=&subject=&award=POTTS&sy=&ey=&max=300&name=Submit |title=Franklin Laureate Database - Howard N. Potts Medal Laureates |publisher=[[Franklin Institute]] |access-date=March 13, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20140502215246/http://www.fi.edu/winners/show_results.faw?gs=&ln=&fn=&keyword=&subject=&award=POTTS&sy=&ey=&max=300&name=Submit |archive-date=May 2, 2014 }}</ref>


⚫
He was awarded the [[Howard N. Potts Medal]] from [[The Franklin Institute]] in 1947.<ref>{{cite web |url=http://www.fi.edu/winners/show_results.faw?gs=&ln=&fn=&keyword=&subject=&award=POTTS&sy=&ey=&max=300&name=Submit |title=Franklin Laureate Database - Howard N. Potts Medal Laureates |publisher=Franklin Institute |access-date=March 13, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20140502215246/http://www.fi.edu/winners/show_results.faw?gs=&ln=&fn=&keyword=&subject=&award=POTTS&sy=&ey=&max=300&name=Submit |archive-date=May 2, 2014 }}</ref>
⚫
He was named honorary vice president of RCA in 1954.<ref name="britannica">{{cite web|url=http://www.britannica.com/EBchecked/topic/658633/Vladimir-Kosma-Zworykin |title=Vladimir Kosma Zworykin (American engineer and inventor) |publisher=[[Encyclopædia Britannica]] |date=1982-07-29 |access-date=2013-12-07}}</ref>


He was elected to the [[American Philosophical Society]] in 1948.<ref>{{Cite web |title=APS Member History |url=https://search.amphilsoc.org/memhist/search?creator=Vladimir+Zworykin&title=&subject=&subdiv=&mem=&year=&year-max=&dead=&keyword=&smode=advanced |access-date=2023-03-06 |website=search.amphilsoc.org}}</ref>
⚫
In 1966, the National Academy of Sciences awarded him the National Medal of Science for his contributions to the instruments of science, engineering, and television and for his stimulation of the application of engineering to medicine.<ref name="britannica" />


⚫
He was named honorary vice president of RCA in 1954.<ref name="britannica">{{britannica|id=658633|title=Vladimir Kosma Zworykin (American engineer and inventor)}}</ref>
⚫
In 1967, Zworykin received the Golden Plate Award of the [[Academy of Achievement|American Academy of Achievement]].<ref>{{cite web|title= Golden Plate Awardees of the American Academy of Achievement |website=www.achievement.org|publisher=[[American Academy of Achievement]]|url=https://achievement.org/our-history/golden-plate-awards/#science-exploration}}</ref>

⚫
In 1966, the [[National Academy of Sciences]], of which he was a member,<ref>{{Cite web |title=Vladimir K. Zworykin |url=http://www.nasonline.org/member-directory/deceased-members/48786.html |access-date=2023-03-06 |website=nasonline.org}}</ref> awarded him the [[National Medal of Science]] for his contributions to the instruments of science, engineering, and television and for his stimulation of the application of engineering to medicine.<ref name="britannica" />

⚫
In 1967, Zworykin received the Golden Plate Award of the [[Academy of Achievement|American Academy of Achievement]].<ref>{{cite web|title= Golden Plate Awardees of the American Academy of Achievement |website=achievement.org|publisher=American Academy of Achievement|url=https://achievement.org/our-history/golden-plate-awards/#science-exploration}}</ref>


He was founder-president of the International Federation for Medical Electronics and Biological Engineering, a recipient of the [[Faraday Medal]] from Great Britain (1965), and a member of the U.S. National Hall of Fame from 1977.<ref name="britannica" />
He was founder-president of the International Federation for Medical Electronics and Biological Engineering, a recipient of the [[Faraday Medal]] from Great Britain (1965), and a member of the U.S. National Hall of Fame from 1977.<ref name="britannica" />


He received the first [[Eduard Rhein Ring of Honor]] from the German [[Eduard Rhein Foundation]] in 1980.<ref>{{cite web |url=http://www.eduard-rhein-stiftung.de/html/Ehrenring_e.html |title=The Eduard Rhein Ring of Honor Recipients |publisher=[[Eduard Rhein Foundation]] |access-date=February 5, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20110718234106/http://www.eduard-rhein-stiftung.de/html/Ehrenring_e.html |archive-date=July 18, 2011 }}</ref>
He received the first [[Eduard Rhein Ring of Honor]] from the German [[Eduard Rhein Foundation]] in 1980.<ref>{{cite web |url=http://www.eduard-rhein-stiftung.de/html/Ehrenring_e.html |title=The Eduard Rhein Ring of Honor Recipients |publisher=Eduard Rhein Foundation |access-date=February 5, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20110718234106/http://www.eduard-rhein-stiftung.de/html/Ehrenring_e.html |archive-date=July 18, 2011 }}</ref>


From 1952 to 1986, the IEEE made awards to worthy engineers in the name of Vladimir K. Zworykin. More recently the ''Zworykin Award'' has been bestowed by the [[International Federation for Medical and Biological Engineering]].<ref>{{cite web|url=http://www.ifmbe.org/index.php?option=com_content&view=article&id=113:awards&catid=51:announcements&Itemid=237 |title=Awards |publisher=[[International Federation for Medical and Biological Engineering]] |access-date=May 31, 2011}}</ref>
From 1952 to 1986, the IEEE made awards to worthy engineers in the name of Vladimir K. Zworykin. More recently the ''Zworykin Award'' has been bestowed by the [[International Federation for Medical and Biological Engineering]].<ref>{{cite web|url=http://www.ifmbe.org/index.php?option=com_content&view=article&id=113:awards&catid=51:announcements&Itemid=237 |title=Awards |publisher=International Federation for Medical and Biological Engineering |access-date=May 31, 2011}}</ref>


The most complete list of Zworykin's awards can be found online at historyTV.net .<ref>{{cite web|url=http://framemaster.tripod.com/awards.html|title=VLADIMIR K. ZWORYKIN: DIPLOMAS, CERTIFICATES, HONORS|first=Steve|last=Restelli|website=framemaster.tripod.com}}</ref>
The most complete list of Zworykin's awards can be found online at historyTV.net .<ref>{{cite web|url=http://framemaster.tripod.com/awards.html|title=VLADIMIR K. ZWORYKIN: DIPLOMAS, CERTIFICATES, HONORS|first=Steve|last=Restelli|website=framemaster.tripod.com}}</ref>
Line 116: Line 124:
In 1995 [[University of Illinois Press]] published ''Zworykin, Pioneer of Television'' by Albert Abramson.
In 1995 [[University of Illinois Press]] published ''Zworykin, Pioneer of Television'' by Albert Abramson.


In 2010 [[Leonid Parfyonov]] produced a documentary film "Zvorykin-Muromets"<ref>{{cite web|title=Zvorykin-Muromets|url=https://www.imdb.com/title/tt1791694/|website=[[IMDb]]}}</ref> about Zworykin.
In 2010 [[Leonid Parfyonov]] produced a documentary film "Zvorykin-Muromets"<ref>{{cite web|title=Zvorykin-Muromets|url=https://www.imdb.com/title/tt1791694/|publisher=IMDb}}</ref> about Zworykin.


Zworykin is listed in the Russian-American Chamber of Fame of [[Congress of Russian Americans]], which is dedicated to Russian immigrants who made outstanding contributions to American science or culture.<ref>{{cite web|url=http://eurorussians.com/the-place-of-russian-emigration-in-us-science-and-technology/|title=The place of Russian emigration in US science and technology|date=15 December 2016}}</ref><ref>{{cite book|url=https://books.google.com/books?id=3UW0K78P-jcC |title=All Was Not Lost: Journey of a Russian Immigrant from Riga to Chicagoland|author=Anatoly Bezkorovainy|year=2008|publisher=AuthorHouse|page=457|access-date=August 15, 2017|isbn=9781434364586}}</ref><ref>{{cite web|url=http://www.russian-americans.org/hall-of-fame/|title=Hall of Fame|date=20 June 2015}}</ref>
Zworykin is listed in the Russian-American Chamber of Fame of [[Congress of Russian Americans]], which is dedicated to Russian immigrants who made outstanding contributions to American science or culture.<ref>{{cite web|url=http://eurorussians.com/the-place-of-russian-emigration-in-us-science-and-technology/|title=The place of Russian emigration in U.S. science and technology|date=15 December 2016|access-date=15 August 2017|archive-date=18 April 2023|archive-url=https://web.archive.org/web/20230418133233/http://eurorussians.com/the-place-of-russian-emigration-in-us-science-and-technology/|url-status=dead}}</ref><ref>{{cite book|url=https://books.google.com/books?id=3UW0K78P-jcC |title=All Was Not Lost: Journey of a Russian Immigrant from Riga to Chicagoland|author=Anatoly Bezkorovainy|year=2008|publisher=AuthorHouse|page=457|access-date=August 15, 2017|isbn=9781434364586}}</ref><ref>{{cite web|url=http://www.russian-americans.org/hall-of-fame/|title=Hall of Fame|date=20 June 2015}}</ref>


==See also==
==See also==
Line 126: Line 134:
* [[John Logie Baird]]
* [[John Logie Baird]]
* [[Kalman Tihanyi]]
* [[Kalman Tihanyi]]

==Notes==
{{notelist}}


==References==
==References==
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*Walter Bruch (1967) ''Kleine geschichte des deutschen Fernsehens'', Berlin: Hande & Spender.
*Walter Bruch (1967) ''Kleine geschichte des deutschen Fernsehens'', Berlin: Hande & Spender.
*[http://www.thefarnsworthinvention.com The Farnsworth Invention: Fact -v- Fiction ]
*[http://www.thefarnsworthinvention.com The Farnsworth Invention: Fact -v- Fiction ]
*{{cite web|url=http://www.ieeeghn.org/wiki/index.php/Oral-History:Vladimir_Zworykin |title=IEEE Global History Network - Oral-History: Interview with Vladimir Zworykin on July 4, 1975 |author=Mark Heyer |date=November 29, 2010 |publisher=[[IEEE]] |access-date=March 14, 2011}}
*{{cite web|url=http://www.ieeeghn.org/wiki/index.php/Oral-History:Vladimir_Zworykin |title=IEEE Global History Network - Oral-History: Interview with Vladimir Zworykin on July 4, 1975 |author=Mark Heyer |date=November 29, 2010 |publisher=IEEE |access-date=March 14, 2011}}
*{{cite web|url=http://www.ieeeghn.org/wiki/index.php/Vladimir_Zworykin |title=IEEE Global History Network - Vladimir Zworykin |date=September 16, 2010 |publisher=[[IEEE]] |access-date=March 14, 2011}}
*{{cite web|url=http://www.ieeeghn.org/wiki/index.php/Vladimir_Zworykin |title=IEEE Global History Network - Vladimir Zworykin |date=September 16, 2010 |publisher=IEEE |access-date=March 14, 2011}}
*[https://web.archive.org/web/20041009234924/http://chem.ch.huji.ac.il/~eugeniik/history/zworykin.htm Compilation of biographies of Vladimir Zworykin]- including photographs and bibliography, compiled by Prof. Eugenii Katz of The Hebrew University.
*[https://web.archive.org/web/20041009234924/http://chem.ch.huji.ac.il/~eugeniik/history/zworykin.htm Compilation of biographies of Vladimir Zworykin]- including photographs and bibliography, compiled by Prof. Eugenii Katz of The Hebrew University.
*{{webarchive |url=https://web.archive.org/web/20051126094622/http://www.ieee.org/portal/site/mainsite/menuitem.818c0c39e85ef176fb2275875bac26c8/index.jsp?&pName=corp_level1&path=about/awards/pr&file=zworkpr.xml&xsl=generic.xsl |date=November 26, 2005 |title=Recipients of the IEEE Vladimir K. Zworykin Award }}
*{{webarchive |url=https://web.archive.org/web/20051126094622/http://www.ieee.org/portal/site/mainsite/menuitem.818c0c39e85ef176fb2275875bac26c8/index.jsp?&pName=corp_level1&path=about/awards/pr&file=zworkpr.xml&xsl=generic.xsl |date=November 26, 2005 |title=Recipients of the IEEE Vladimir K. Zworykin Award }}
*[http://www.hist.msu.ru/Journals/NNI/pdfs/Vasin_Velembovskaya_2009.pdf (Russian) Vasin A.N., Velembovskaya K.M. Pages of the Biography of the "Father of TV" V.K. Zworykin (1888-1982) magazine "Modern and Contemporary History", Russian Academy of Science, Moscow, 2009,№5]
*[http://www.hist.msu.ru/Journals/NNI/pdfs/Vasin_Velembovskaya_2009.pdf (Russian) Vasin A.N., Velembovskaya K.M. Pages of the Biography of the "Father of TV" V.K. Zworykin (1888-1982) magazine "Modern and Contemporary History", Russian Academy of Science, Moscow, 2009,№5] {{Webarchive|url=https://web.archive.org/web/20160304120933/http://www.hist.msu.ru/Journals/NNI/pdfs/Vasin_Velembovskaya_2009.pdf |date=2016-03-04 }}
*[http://framemaster.tripod.com/awards.html Awards of Vladimir K. Zworykin]
*[http://framemaster.tripod.com/awards.html Awards of Vladimir K. Zworykin]


==External links==
==External links==
*{{Commons category inline}}
*{{Commons category inline}}
*[http://findingaids.hagley.org/xtf/view?docId=ead/2464_I.xml Vladimir K. Zworykin papers] at [[Hagley Museum and Library]]
*[http://findingaids.hagley.org/xtf/view?docId=ead/2464_I.xml Vladimir K. Zworykin papers] {{Webarchive|url=https://web.archive.org/web/20160308123718/http://findingaids.hagley.org/xtf/view?docId=ead/2464_I.xml |date=2016-03-08 }} at [[Hagley Museum and Library]]
;Videos
;Videos
*[https://archive.org/details/StoryofT1956 Zworykin interviewed in ''The Story of Television'' in the Internet Archive]
*[https://archive.org/details/StoryofT1956 Zworykin interviewed in ''The Story of Television'' in the Internet Archive]


{{National Medal of Science}}
{{Westinghouse}}
{{Westinghouse}}
{{IEEE Edison Medal Laureates 1951-1975}}
{{IEEE Edison Medal Laureates 1951-1975}}
{{IEEE Medal of Honor Laureates 1951-1975}}
{{IEEE Medal of Honor Laureates 1951-1975}}
{{Telecommunications}}
{{Telecommunications}}
{{Electron microscopy}}

{{Authority control}}
{{Authority control}}


{{DEFAULTSORT:Zworykin, Vladimir}}
{{DEFAULTSORT:Zworykin, Vladimir}}
[[Category:1888 births]]
[[Category:1880s births]]
[[Category:1982 deaths]]
[[Category:1982 deaths]]

[[Category:Year of birth uncertain]]
[[Category:People from Murom]]
[[Category:People from Murom]]
[[Category:White Russian emigrants to the United States]]
[[Category:White Russian emigrants to the United States]]
[[Category:American people of Russian descent]]
[[Category:Inventors from the Russian Empire]]
[[Category:Russian inventors]]
[[Category:Electrical engineers from the Russian Empire]]
[[Category:Russian electrical engineers]]
[[Category:20th-century American inventors]]
[[Category:20th-century American inventors]]
[[Category:American electrical engineers]]
[[Category:American electrical engineers]]
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[[Category:IEEE Lamme Medal recipients]]
[[Category:IEEE Lamme Medal recipients]]
[[Category:People from Princeton, New Jersey]]
[[Category:People from Princeton, New Jersey]]
[[Category:Members of the American Philosophical Society]]

Latest revision as of 01:57, 25 November 2024

Vladimir K. Zworykin
Vladimir Zworykin, c. 1956
Born
Vladimir Kosmich Zworykin

1888 or 1889[a]
Murom, Vladimir Governorate, Russian Empire
Died(1982-07-29)July 29, 1982 (aged 92–94)
Princeton, New Jersey, U.S.
CitizenshipRussian, American
EducationSaint Petersburg State Institute of Technology
ESPCI
University of Pittsburgh (PhD)
OccupationEngineer
SpouseTatiana Vasilieff (m. 1915) 2nd wife Katherine Polevitsky (m. 1951)
Engineering career
ProjectsTelevision, Electron Microscope
Significant designIconoscope, Photomultiplier
Significant advanceInventor of the kinescope and other components of early television technology
AwardsIRE Medal of Honor, 1951, IEEE Edison Medal, 1952

Vladimir Kosma Zworykin[b] (1888/1889[a] – July 29, 1982[7]) was a Russian-American inventor, engineer, and pioneer of television technology. Zworykin invented a television transmitting and receiving system employing cathode-ray tubes. He played a role in the practical development of television from the early thirties, including charge storage-type tubes, infrared image tubes and the electron microscope.[8]

Early life and education

[edit]

Vladimir Zworykin was born in Murom, Russia, in 1888 or 1889, to the family of a prosperous merchants. He had a relatively calm upbringing, and he rarely saw his father except on religious holidays.

He studied at the St. Petersburg Institute of Technology, under Boris Rosing. He helped Rosing with experimental work on television in the basement of Rosing's private lab at the School of Artillery of Saint Petersburg. They worked on the problem of "electrical telescopy," something Zworykin had never heard of before. At this time, electrical telescopy (or television as it was later called) was just a dream. Zworykin did not know that others had been studying the idea since the 1880s, or that Professor Rosing had been working on it in secret since 1902 and had made excellent progress. Rosing had filed his first patent on a television system in 1907, featuring a very early cathode-ray tube as a receiver, and a mechanical device as a transmitter. Its demonstration in 1911, based on an improved design, was the world's first demonstration of TV of any kind.[5]

Zworykin married Tatiana Vasilieva in 1916, they had two daughters (the couple separated in the early 1930s).[9]

Career

[edit]

Zworykin graduated in 1912. He then studied X-rays under professor Paul Langevin in Paris.[5] During World War I, Zworykin was enlisted and served in the Russian Signal Corps. He then worked testing radio equipment that was being produced for the Russian Army. Zworykin left Russia for the United States in 1918 during the Russian Civil War. He left through Siberia, travelling north on the River Ob to the Arctic Ocean as part of an expedition led by Russian scientist Innokenty P. Tolmachev, eventually arriving in the U.S. at the end of 1918. He returned to Omsk, then capital of Admiral Kolchak's government in 1919, via Vladivostok, then to the United States again on official duties from the Omsk government. These duties ended with the collapse of the White movement in Siberia at the death of Kolchak. Zworykin then decided to remain permanently in the United States.

Zworykin demonstrates electronic television (1929).

Once in the U.S., Zworykin found work at the Westinghouse laboratories in Pittsburgh where he eventually had an opportunity to engage in television experiments.

Zworykin applied for a television patent in the U.S. in 1923. He summarized the resulting invention in two patent applications. The first, entitled "Television Systems", was filed on December 29, 1923, and was followed by a second application in 1925 of essentially the same content, but with minor changes and the addition of a Paget-type RGB raster screen for color transmission and reception.[10] He was awarded a patent for the 1925 application in 1928,[10] and two patents for the 1923 application that was divided in 1931,[11][12] although the equipment described was never successfully demonstrated.[13][14][5]: 51, 2  Zworykin described cathode-ray tubes as both transmitter and receiver. The operation, whose basic thrust was to prevent the emission of electrons between scansion cycles, was reminiscent of A. A. Campbell Swinton's proposal published in Nature in June 1908.[15]

Drawing from Zworykin's 1923 patent application Television System.[11][12]

The demonstration given (sometime in late 1925 or early 1926) by Zworykin was far from a success with the Westinghouse management, even though it showed the possibilities inherent in a system based on the cathode-ray tube. He was told by management to "devote his time to more practical endeavours," yet continued his efforts to perfect his system.

As attested by his doctoral dissertation of 1926, earning him a PhD from the University of Pittsburgh, his experiments were directed at improving the output of photoelectric cells. There were, however, limits to how far one could go along these lines, and so, in 1929, Zworykin returned to vibrating mirrors and facsimile transmission, filing patents describing these. At this time, however, he was also experimenting with an improved cathode ray receiving tube, filing a patent application for this in November 1929, and introducing the new receiver that he named the "kinescope", reading a paper two days later at a convention of the Institute of Radio Engineers.

Having developed the prototype of the receiver by December, Zworykin met David Sarnoff,[16] who eventually hired him and put him in charge of television development for the Radio Corporation of America (RCA) at its factories and laboratories in Camden, New Jersey.

The move to the RCA's Camden laboratories occurred in the spring of 1930, and the difficult task of developing a transmitter could begin. There was an in-house evaluation in mid-1930, where the kinescope performed well (but with only 60 lines definition),[16] and the transmitter was still of a mechanical type. A "breakthrough" would come when the Zworykin team decided to develop a new type of cathode ray transmitter, one described in the French and British patents of 1928 priority by the Hungarian inventor Kálmán Tihanyi whom the company had approached in July 1930, after the publication of his patents in England and France. This was a curious design, one where the scanning electron beam would strike the photoelectric cell from the same side where the optical image was cast. Even more importantly, it was a system characterized by an operation based on an entirely new principle, the principle of the accumulation and storage of charges during the entire time between two scansions by the cathode-ray beam.

Zworykin and some of the historic camera tubes he developed

According to Albert Abramson,[where?] Zworykin's experiments started in April 1931, and after the achievement of the first promising experimental transmitters, on October 23, 1931, it was decided that the new camera tube would be named the iconoscope. Zworykin first presented his iconoscope to RCA in 1932.[17] He continued work on it, and "[t]he image iconoscope, presented in 1934, was a result of a collaboration between Zworykin and RCA's licensee Telefunken. ... In 1935 the Reichspost started the public broadcastings using this tube and applying a 180 lines system."[17]

RCA filed an interference suit against rival television scientist Philo Farnsworth, claiming Zworykin's 1923 patent had priority over Farnsworth's design, despite the fact it could present no evidence that Zworykin had actually produced a functioning transmitter tube before 1931. Farnsworth had lost two interference claims to Zworykin in 1928, but this time he prevailed and the U.S. Patent Office rendered a decision in 1934 awarding priority of the invention of the image dissector to Farnsworth. RCA lost a subsequent appeal, but litigation over a variety of issues continued for several years with Sarnoff finally agreeing to pay Farnsworth royalties.[18][19] Zworykin received a patent in 1928 for a color transmission version of his 1923 patent application;[10] he also divided his original application in 1931, receiving a patent in 1935,[11] while a second one was eventually issued in 1938[12] by the Court of Appeals on a non-Farnsworth-related interference case,[20] and over the objection of the Patent Office.[21]

Later life

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Zworykin married for a second time in 1951. His wife was Katherine Polevitzky (1888–1985), a Russian-born professor of bacteriology at the University of Pennsylvania. It was the second marriage for both. The ceremony was in Burlington, New Jersey.[22] A photographic record of his marriage and worldwide tour can be viewed online.[23] He retired in 1954.

New frontiers in medical engineering and biological engineering appealed to him, and he became a founder and first president of the International Federation for Medical and Biological Engineering. The Federation continues to honor outstanding research engineering with a Zworykin Award, the prize being travelling funds to the award's presentation at a World Congress.[24]

Death

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Zworykin died on July 29, 1982, in Princeton, New Jersey.[7] His wife Katherine died on February 18, 1985.[25]

Honors

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Vladimir Zworykin's patent diagram of an iconoscope, 1931,[26] with an apparatus similar to the camera part.[11][12]

Throughout his steady rise in rank, Zworykin remained involved in the many important developments of RCA and received several outstanding honours, including, in 1934, the Morris Liebmann Memorial Prize from the Institute of Radio Engineers.[27]

In 1941, he was elected to the American Academy of Arts and Sciences.[28]

He was awarded the Howard N. Potts Medal from The Franklin Institute in 1947.[29]

He was elected to the American Philosophical Society in 1948.[30]

He was named honorary vice president of RCA in 1954.[4]

In 1966, the National Academy of Sciences, of which he was a member,[31] awarded him the National Medal of Science for his contributions to the instruments of science, engineering, and television and for his stimulation of the application of engineering to medicine.[4]

In 1967, Zworykin received the Golden Plate Award of the American Academy of Achievement.[32]

He was founder-president of the International Federation for Medical Electronics and Biological Engineering, a recipient of the Faraday Medal from Great Britain (1965), and a member of the U.S. National Hall of Fame from 1977.[4]

He received the first Eduard Rhein Ring of Honor from the German Eduard Rhein Foundation in 1980.[33]

From 1952 to 1986, the IEEE made awards to worthy engineers in the name of Vladimir K. Zworykin. More recently the Zworykin Award has been bestowed by the International Federation for Medical and Biological Engineering.[34]

The most complete list of Zworykin's awards can be found online at historyTV.net .[35]

Legacy

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Zworykin was inducted into the New Jersey Inventor's Hall of Fame and the National Inventors Hall of Fame. Additionally, Tektronix in Beaverton, Oregon has named a street on its campus after Zworykin.

In 1995 University of Illinois Press published Zworykin, Pioneer of Television by Albert Abramson.

In 2010 Leonid Parfyonov produced a documentary film "Zvorykin-Muromets"[36] about Zworykin.

Zworykin is listed in the Russian-American Chamber of Fame of Congress of Russian Americans, which is dedicated to Russian immigrants who made outstanding contributions to American science or culture.[37][38][39]

See also

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Notes

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  1. ^ a b Zworykin himself stated his birth date inconsistently (even after accounting for Old Style and New Style dates) as various days of June or July, 1888 or 1889.[5]: 212  Other sources show various similar birth dates.[6][7][4][2]
  2. ^ Russian: Влади́мир Козьми́ч Зворы́кин, romanized: Vladimir Koz'mich Zvorykin;[1] or with the patronymic as Kosmich; or Кузьмич, Kuz'mich.[2] Zworykin anglicized his name to Vladimir Kosma Zworykin,[3][4] replacing the patronymic with the name Kosma as a middle name, and using the nonstandard transliteration Zworykin.[2]

References

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  1. ^ Владимир Козьмич Зворыкин (Plaque outside school). Murom, Russia: Murom School No. 16.
  2. ^ a b c "Зворыкин Владимир Кузьмич". Большая Советская Энциклопедия (Great Soviet Encyclopedia) (in Russian) (3rd ed.). 1972. Зворыкин (Zworykin) Владимир Кузьмич (р.30.7.1889, Муром, ныне Владимирской области)...
  3. ^ Zworykin, Vladimir Kosma; Wilson, Earl DeWitt (1934). Photocells and their application (2nd ed.). New York: John Wiley & Sons. p. iv. hdl:2027/wu.89074766767 – via HathiTrust.
  4. ^ a b c d e Vladimir Kosma Zworykin (American engineer and inventor) at the Encyclopædia Britannica
  5. ^ a b c d Abramson, Albert (1995). Zworykin, Pioneer of Television. University of Illinois Press. ISBN 0-252-02104-5.
  6. ^ The birth year is 1888 according to the metrical book [ru] (similar to a parish register) of Sretenskaya Church of the town of Murom (later placed in the archive of Murom ZAGS). The metrical book was brought into attention by V. Ya. Chernushev. The birth date of Zworykin was revised by K. M. Velembovskaya, journal "Новая и новейшая история" (Modern and Contemporary History) № 5 2009.
  7. ^ a b c Thomas, Robert McG. Jr. (August 1, 1982). "Vladimir Zworykin, Television Pioneer, Dies at 92". The New York Times. sec. 1, p. 32. Retrieved November 2, 2022. Dr. Vladimir Kosma Zworykin, a Russian-born scientist whose achievements were pivotal to the development of television, died Thursday [i.e., July 29, 1982] at the Princeton (N.J.) Medical Center. He was 92 years old and lived in Princeton. ... Dr. Zworykin was born July 30, 1889, in the small town of Murom on the Oka River...
  8. ^ IEEE Global History Network (2011). "Vladimir Zworykin Oral History". IEEE History Center. Retrieved 8 July 2011.
  9. ^ "Субботина Е. А. Первая семья В. К. Зворыкина" [First family of Zworykin]. Муромский историко-художественный музей (in Russian).
  10. ^ a b c US Patent 1691324, Zworykin, Vladimir, "Television System", issued November 13, 1928 
  11. ^ a b c d US Patent 2022450, Zworykin, Vladimir K., "Television System", issued November 26, 1935 
  12. ^ a b c d US Patent 2141059, Zworykin, Vladimir K.,, "Television System", issued December 20, 1938 
  13. ^ Schatzkin, Paul (2002). The Boy who Invented Television. Silver Spring, Md: Teamcom Books. pp. 111–8. ISBN 1-928791-30-1.
  14. ^ Abramson, Albert (1987). The History of Television, 1880 to 1941. Jefferson, N.C: McFarland. p. 209. ISBN 0-89950-284-9.
  15. ^ Swinton, A. a. Campbell (1908). "Distant Electric Vision" (PDF). Nature (Journal). 78 (2016): 151. Bibcode:1908Natur..78..151S. doi:10.1038/078151a0. ISSN 1476-4687.
  16. ^ a b "Story of Television, The". 1956. Retrieved 8 January 2020.
  17. ^ a b de Vries, M. J.; de Vries, Marc; Cross, Nigel; Grant, Donald P. (1993). Design methodology and relationships with science, Número 71 de NATO ASI series. Springer. p. 222. ISBN 978-0-7923-2191-0. Retrieved 2010-01-15.
  18. ^ Postman, Neil (March 29, 1999). "The Time 100: Scientists & Thinkers: Philo Farnsworth". Time. Archived from the original on May 31, 2000. Retrieved July 28, 2009.
  19. ^ Burns, R. W. (1998). Television: an international history of the formative years. IET. p. 366. ISBN 978-0-85296-914-4.
  20. ^ "Wins Basic Patent in Television Field". The New York Times. December 22, 1938. p. 38:6.
  21. ^ "Who Invented Television?". The Farnsworth Chronicles. 2001.
  22. ^ "Married". Time. November 26, 1951. Archived from the original on August 6, 2009. Retrieved 2008-04-27. Vladimir Zworykin, 62, Russian-born, Russian-trained physicist, the "father of television," who developed the iconoscope (eye) of the TV camera in 1923, now laments: "We never dreamed of Howdy Doody on Television — we always thought television would find its highest value in science and industry"; and Katherine Polevitzky, 62, Russian-born professor of bacteriology at the University of Pennsylvania; both for the second time; in Burlington, New Jersey.
  23. ^ Restelli, Steve. "1951 Dr.Zworykin Television Inventor Weds Dr. Katherine Polevitzky". framemaster.tripod.com.
  24. ^ "IFMBE | International Federation for Medical and Biological Engineering".
  25. ^ "Katherine Zworykin". Fold3.
  26. ^ US2021907A, Zworykin, Vladimir K., "Method of and apparatus for producing images of objects", issued 1935-11-26 
  27. ^ "IEEE Morris N. Liebmann Memorial Award Recipients" (PDF). IEEE. Archived from the original (PDF) on June 29, 2011. Retrieved March 14, 2011.
  28. ^ "Vladimir Kosma Zworykin". American Academy of Arts & Sciences. 9 February 2023. Retrieved 2023-03-06.
  29. ^ "Franklin Laureate Database - Howard N. Potts Medal Laureates". Franklin Institute. Archived from the original on May 2, 2014. Retrieved March 13, 2011.
  30. ^ "APS Member History". search.amphilsoc.org. Retrieved 2023-03-06.
  31. ^ "Vladimir K. Zworykin". nasonline.org. Retrieved 2023-03-06.
  32. ^ "Golden Plate Awardees of the American Academy of Achievement". achievement.org. American Academy of Achievement.
  33. ^ "The Eduard Rhein Ring of Honor Recipients". Eduard Rhein Foundation. Archived from the original on July 18, 2011. Retrieved February 5, 2011.
  34. ^ "Awards". International Federation for Medical and Biological Engineering. Retrieved May 31, 2011.
  35. ^ Restelli, Steve. "VLADIMIR K. ZWORYKIN: DIPLOMAS, CERTIFICATES, HONORS". framemaster.tripod.com.
  36. ^ "Zvorykin-Muromets". IMDb.
  37. ^ "The place of Russian emigration in U.S. science and technology". 15 December 2016. Archived from the original on 18 April 2023. Retrieved 15 August 2017.
  38. ^ Anatoly Bezkorovainy (2008). All Was Not Lost: Journey of a Russian Immigrant from Riga to Chicagoland. AuthorHouse. p. 457. ISBN 9781434364586. Retrieved August 15, 2017.
  39. ^ "Hall of Fame". 20 June 2015.

Further reading

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Videos
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