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{{short description|None}}

The [[hexagonal]] [[snowflake]], a [[Ice crystal|crystalline]] formation of [[ice]], has intrigued people throughout history. This is a [[chronology]] of interest and research into snowflakes. Artists, philosophers, and scientists have wondered at their shape, recorded them by hand or in photographs, and attempted to recreate hexagonal snowflakes.
The [[hexagonal]] [[snowflake]], a [[Ice crystal|crystalline]] formation of [[ice]], has intrigued people throughout history. This is a [[chronology]] of interest and research into snowflakes. Artists, philosophers, and scientists have wondered at their shape, recorded them by hand or in photographs, and attempted to recreate hexagonal snowflakes.

Wilson Alwyn Bentley (February 9, 1865 – December 23, 1931), also known as Snowflake Bentley, was an American meteorologist and photographer, who was the first known person to take detailed photographs of snowflakes and record their features.[1] He perfected a process of catching flakes on black velvet in such a way that their images could be captured before they either melted or sublimated.


==Chronological list==
==Chronological list==


=== [[Before Christ|BC]] to 1900 ===
=== [[Before Christ|BC]] to 1900 ===
* BC150<ref name=yukiken >{{cite web|url=http://acha758.blog24.fc2.com/blog-entry-181.html|script-title=ja:雪研究の歴史|language=Japanese|trans-title=History of research of snow|accessdate=2009-07-18}}</ref> or BC 135<ref name=Darmouth >{{cite web|url=http://dujs.dartmouth.edu/wp-content/uploads/2008/04/snowflakes1.pdf|title=The History of the Science of snowflakes|publisher=[[Dartmouth College]]|accessdate=2009-07-18}}</ref> - Han Ying's ([[:zh:韓嬰|韓嬰]]) book ''[[Han shi waizhuan]]'' contrasts the [[pentagon]]al symmetry of flowers with the [[hexagonal symmetry]] of snow (in Chinese 曰凡草木花多五出雪花獨六出雪花曰霙雪雲曰同雲). This is discussed further in [[Imperial Readings of the Taiping Era]].
* {{BCE|150|link=y}}<ref name=yukiken >{{cite web|url=http://acha758.blog24.fc2.com/blog-entry-181.html|script-title=ja:雪研究の歴史|language=ja|trans-title=History of research of snow|access-date=2009-07-18}}</ref> or {{BCE|135}}<ref name=Darmouth >{{cite journal|author-last=Olowoyeye|author-first=Omolara|url=https://sites.dartmouth.edu/dujs/2008/04/15/snowflakes/|title=The History of the Science of Snowflakes|journal=[[Dartmouth Undergraduate Journal of Science]]|year=2003|volume=5|issue=3|pages=18{{ndash}}20|access-date=2022-08-22|archive-url=https://web.archive.org/web/20200725072426/https://cpb-us-e1.wpmucdn.com/sites.dartmouth.edu/dist/0/2024/files/2008/04/snowflakes1.pdf|archive-date=2020-07-25|url-status=live}}</ref> - Han Ying ([[:zh:韓嬰|韓嬰]]) compiled the anthology ''[[Han shi waizhuan]]'', which includes a passage that contrasts the [[pentagonal symmetry]] of flowers with the [[hexagonal symmetry]] of snow.<ref>The passage reads "{{lang|zh|凡草木花多五出，雪花獨六出，雪花曰霙，雪雲曰同雲}}".</ref> This is discussed further in the ''[[Imperial Readings of the Taiping Era]]''.
* 1250 - [[Albertus Magnus]] offers what is believed to be the oldest detailed description of snow.
* 1250 - [[Albertus Magnus]] offers what is believed to be the oldest detailed description of snow.
* 1555 - [[Olaus Magnus]] publishes the earliest snowflake diagrams in ''[[Historia de gentibus septentrionalibus]]''.
* 1555 - [[Olaus Magnus]] publishes the earliest snowflake diagrams in ''[[Historia de gentibus septentrionalibus]]''.
* 1611 - [[Johannes Kepler]], in ''Strenaseu De Nive Sexangula'', attempts to explain why snow crystals are hexagonal.<ref>{{cite book |last1= Kepler |first1=Johannes |authorlink1= Johannes Kepler |title= De nive sexangula |trans-title=The Six-sided Snowflake |url= |year= 1966 |origyear= 1611 |publisher= Clarendon Press |location= Oxford |isbn= |oclc=974730 }}</ref>
* 1611 - [[Johannes Kepler]], in ''Strenaseu De Nive Sexangula'', attempts to explain why snow crystals are hexagonal.<ref>{{cite book |last1= Kepler |first1=Johannes |author-link1= Johannes Kepler |title= De nive sexangula |trans-title=The Six-sided Snowflake |year= 1966 |orig-year= 1611 |publisher= Clarendon Press |location= Oxford |oclc=974730 }}</ref>
* 1637 - [[René Descartes]]' ''[[Discourse on the Method]]'' includes hexagonal diagrams and a study for the crystallization process and conditions for snowflakes.
* 1637 - [[René Descartes]]' ''[[Discourse on the Method]]'' includes hexagonal diagrams and a study for the crystallization process and conditions for snowflakes.
* 1660 - [[Rasmus Bartholin|Erasmus Bartholinus]], in his ''De figura nivis dissertatio'', includes sketches of snow crystals.<ref>{{Cite web|url=http://openlibrary.org/b/OL20301802M/De_figura_nivis_dissertatio|title=De figura nivis dissertatio、Landmarks of science|publisher=Open Library|accessdate=2009-10-20}}</ref>
* 1660 - [[Rasmus Bartholin|Erasmus Bartholinus]], in his ''De figura nivis dissertatio'', includes sketches of snow crystals.<ref>{{Cite book|url=https://openlibrary.org/b/OL20301802M/De_figura_nivis_dissertatio|title=De figura nivis dissertatio、Landmarks of science|date=1661 |publisher=Open Library|ol=20301802M |access-date=2009-10-20}}</ref>
* 1665 - [[Robert Hooke]] [[observation|observes]] snow crystals under magnification in ''[[Micrographia]]''.
* 1665 - [[Robert Hooke]] [[observation|observes]] snow crystals under magnification in ''[[Micrographia]]''.
* 1675 - [[Friedrich Martens]], a German physician, catalogues 24 types of snow crystal.<ref>[http://cruise-handbook.npolar.no/en/nordvesthjornet/smeerenburg.html The ruins of Smeerenburg – a fragmented past, there were already signs of decay when Friedrich Martens came to visit in 1671]</ref><ref>[https://books.google.com/books?id=PYdBH4dOOM4C&pg=PA593&lpg=PA593&dq=Martens+Island&source=bl&ots=hbD4BNCwkg&sig=TeUyQ9q-RHBqsME7CVFtx5YdGGM&hl=en&ei=vZ9gSv-eNteAkQWb1IjQDA&sa=X&oi=book_result&ct=result&resnum=9 Martens Island is named for Friedrich Martens, a German physician who visited Spitsbergen in 1671]</ref>
* 1675 - [[Friedrich Martens]], a German physician, catalogues 24 types of snow crystal.<ref>[http://cruise-handbook.npolar.no/en/nordvesthjornet/smeerenburg.html The ruins of Smeerenburg – a fragmented past, there were already signs of decay when Friedrich Martens came to visit in 1671]</ref><ref>[https://books.google.com/books?id=PYdBH4dOOM4C&dq=Martens+Island&pg=PA593 Martens Island is named for Friedrich Martens, a German physician who visited Spitsbergen in 1671]</ref>
* 1681 - [[Donato Rossetti]] categorizes snow crystals in ''La figura della neve''.
* 1681 - [[Donato Rossetti]] categorizes snow crystals in ''La figura della neve''.
* 1778 - Dutch [[theologian]] [[Johannes Florentius Martinet]] diagrams precise sketches of snow crystals.<ref>[http://www.flipkart.com/katechismus-der-natuur-deel-johannes/110426417x-mfx3fojotc Katechismus Der Natuur, Deel 2 (1778)]</ref><ref>[http://www.meemelink.com/books%20pages/22049.Martinet.htm Martinet, Johannes Florentius: Katechismus der natuur.]{{dead link|date=May 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>[[Jan Hendrik van Kinsbergen#Return to the Dutch Republic|Joannes Florentius Martinet]]</ref>
* 1778 - Dutch [[theologian]] [[Johannes Florentius Martinet]] diagrams precise sketches of snow crystals.<ref>[https://archive.today/20110807191949/http://www.flipkart.com/katechismus-der-natuur-deel-johannes/110426417x-mfx3fojotc Katechismus Der Natuur, Deel 2 (1778)]</ref><ref>[http://www.meemelink.com/books%20pages/22049.Martinet.htm Martinet, Johannes Florentius: Katechismus der natuur.]{{dead link|date=May 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>[[Jan Hendrik van Kinsbergen#Return to the Dutch Republic|Joannes Florentius Martinet]]</ref>
* 1796 - [[Shiba Kōkan]] publishes sketches of ice crystals under a [[microscope]].
* 1796 - [[Shiba Kōkan]] publishes sketches of ice crystals under a [[microscope]].
* 1820 - [[William Scoresby]]'s ''An account of the Arteic Regions'' includes snow crystals by type.
* 1820 - [[William Scoresby]]'s ''An account of the Arteic Regions'' includes snow crystals by type.
* 1832 - [[Doi Toshitsura]] describes and diagrams 86 types of snowflake ([[:ja:雪華図説|雪華図説]]).
* 1832 - [[Doi Toshitsura]] describes and diagrams 86 types of snowflake ([[:ja:雪華図説|雪華図説]]).
* 1837 - {{nihongo|Suzuki Bokushi|[[:ja:鈴木牧之|鈴木牧之]]}} publishes [[Hokuetsu Seppu]].
* 1837 - {{nihongo|Suzuki Bokushi|[[:ja:鈴木牧之|鈴木牧之]]}} publishes ''[[Hokuetsu Seppu]]''.
* 1840 - Doi Toshitsura expands his categories to include 97 types.
* 1840 - Doi Toshitsura expands his categories to include 97 types.
* 1855 - [[James Glaisher]] publishes detailed sketches of snow crystals under a microscope.
* 1855 - [[James Glaisher]] publishes detailed sketches of snow crystals under a microscope.
* 1865 - [[Frances E. Chickering]] publishes ''Cloud Crystals - a Snow-Flake Album''.<ref>{{cite web|url=http://www.dsloan.com/catalogues/pdf/Bulletin09.pdf|title=36. CHICKERING, Mrs. Francis E., Dorothy Sloan Books – Bulletin 9 (12/92)|date=December 1992|archiveurl=http://www.dsloan.com/catalogues/pdf/Bulletin09.pdf|archivedate=1992-12-01|accessdate =2009-10-20}}</ref><ref>[http://www.raremapsandbooks.com/index.php?main_page=product_info&cPath=137&products_id=6735 Cloud Crystals - a Snow-Flake Album, Author: Chickering, Frances E., Year: 1865] {{webarchive|url=https://web.archive.org/web/20110715154851/http://www.raremapsandbooks.com/index.php?main_page=product_info&cPath=137&products_id=6735 |date=2011-07-15 }}</ref>
* 1865 - [[Frances E. Chickering]] publishes ''Cloud Crystals - a Snow-Flake Album''.<ref>{{cite web|url=http://www.dsloan.com/catalogues/pdf/Bulletin09.pdf|title=36. CHICKERING, Mrs. Francis E., Dorothy Sloan Books – Bulletin 9 (12/92)|date=December 1992|access-date =2009-10-20}}</ref><ref>[http://www.raremapsandbooks.com/index.php?main_page=product_info&cPath=137&products_id=6735 Cloud Crystals - a Snow-Flake Album, Author: Chickering, Frances E., Year: 1865] {{webarchive|url=https://web.archive.org/web/20110715154851/http://www.raremapsandbooks.com/index.php?main_page=product_info&cPath=137&products_id=6735 |date=2011-07-15 }}</ref>
* 1870 - [[Adolf Erik Nordenskiöld]] identifies "[[cryoconite]] holes."<ref>{{cite web| url=http://www.cen.ulaval.ca/warwickvincent/PDFfiles/132.pdf|title=Cyanobacterial Dominance in the Polar Regions, Introduction|accessdate=2009-07-18|author=Warwick F. Vincent|publisher=[[Université Laval]]|format=PDF|archiveurl=http://www.cen.ulaval.ca/warwickvincent/PDFfiles/132.pdf|archivedate =2009-07-18}}</ref>
* 1870 - [[Adolf Erik Nordenskiöld]] identifies "[[cryoconite]] holes."<ref>{{cite web| url=http://www.cen.ulaval.ca/warwickvincent/PDFfiles/132.pdf|title=Cyanobacterial Dominance in the Polar Regions, Introduction|access-date=2009-07-18|author=Warwick F. Vincent|publisher=[[Université Laval]]}}</ref>
* 1872 - [[John Tyndall]] publishes ''The Forms of Water in Clouds and Rivers, Ice and Glaciers''.
* 1872 - [[John Tyndall]] publishes ''The Forms of Water in Clouds and Rivers, Ice and Glaciers''.
* 1891 - [[Friedrich Umlauft]] publishes ''Das Luftmeer''.
* 1891 - [[Friedrich Umlauft]] publishes ''Das Luftmeer''.
* 1893 - [[Richard Neuhauss]] photographs a snowflake under a microscope, titled ''Schneekrystalle''.
* 1893 - [[:de:Richard Neuhauss|Richard Neuhauss]] photographs a snowflake under a microscope, titled ''Schneekrystalle''.
* 1894 - [[A. A. Sigson]] photographs snowflakes under a microscope.<ref>[http://docs.lib.noaa.gov/rescue/mwr/028/Text/mwr-028-12-0542.TXT 1 Temperature, .... also A. A. Sigson in Rybinsk, Russia, had been making micro-photographs,....]</ref>
* 1894 - [[A. A. Sigson]] photographs snowflakes under a microscope.<ref>[http://docs.lib.noaa.gov/rescue/mwr/028/Text/mwr-028-12-0542.TXT 1 Temperature, .... also A. A. Sigson in Rybinsk, Russia, had been making micro-photographs,....]</ref>


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* 1952 - Marcel R. de Quervain ''[[et al.]]'' define ten major types of snow crystals, including [[hail]] and [[graupel]] in [[IUGG]] for the Swiss Federal Institute for Snow and Avalanche Research.
* 1952 - Marcel R. de Quervain ''[[et al.]]'' define ten major types of snow crystals, including [[hail]] and [[graupel]] in [[IUGG]] for the Swiss Federal Institute for Snow and Avalanche Research.
* 1954 - Harvard University Press publishes Ukichiro Nakaya's ''Snow Crystals: Natural and Artificial''.
* 1954 - Harvard University Press publishes Ukichiro Nakaya's ''Snow Crystals: Natural and Artificial''.
* 1960 - {{nihongo|Teisaku Kobayashi|小林禎作|Kobayashi Teisaku}}, verifies and improves the ''Nakaya Diagram'' with the ''Kobayashi Diagram''.<ref>{{cite web|url=http://msj-hokkaido.jp/kaki/kaki2007.pdf|script-title=ja:２．雪は「天からの手紙」か？|accessdate =2009-07-18|author=油川英明 (Hideaki Aburakawa)|format=PDF|publisher=The Meteorological Society of Japan, Hokkaido Branch|language=Japanese|trans-title=2. Is snow "The letter from the sky"?|archiveurl=http://msj-hokkaido.jp/kaki/kaki2007.pdf|archivedate =2009-07-18}}</ref>
* 1960 - {{nihongo|Teisaku Kobayashi|小林禎作|Kobayashi Teisaku}}, verifies and improves the ''Nakaya Diagram'' with the ''Kobayashi Diagram''.<ref>{{cite web|url=http://msj-hokkaido.jp/kaki/kaki2007.pdf|script-title=ja:２．雪は「天からの手紙」か？|access-date=2009-07-18|author=油川英明 (Hideaki Aburakawa)|publisher=The Meteorological Society of Japan, Hokkaido Branch|language=ja|trans-title=2. Is snow "The letter from the sky"?|archive-url=https://web.archive.org/web/20110410124145/http://msj-hokkaido.jp/kaki/kaki2007.pdf|archive-date=2011-04-10|url-status=dead}}</ref>
* 1962 - {{nihongo|Cyoji Magono|孫野長治|Magono Cyōji}} describes meteorological sorting of snow crystal types in [[cloud]]s.<ref>{{cite web|url=http://www.bosai.go.jp/library/pub/report/PDF/19/19nakamurah3.pdf|title=Density of the Dai1y New Snow Observed in Shinjō, Yamagata|accessdate =2009-07-18|author=Hideomi Nakamura (中村秀臣) and Osamu Abe (阿部修) |format=PDF|publisher=National Research Institute for Earth Science and Disaster Prevention (NIED)|language=Japanese|archiveurl=http://www.bosai.go.jp/library/pub/report/PDF/19/19nakamurah3.pdf|archivedate =2009-07-18}}</ref>
* 1962 - {{nihongo|Cyoji Magono|孫野長治|Magono Cyōji}} describes meteorological sorting of snow crystal types in [[cloud]]s.<ref>{{cite web|url=http://www.bosai.go.jp/library/pub/report/PDF/19/19nakamurah3.pdf|title=Density of the Dai1y New Snow Observed in Shinjō, Yamagata|access-date =2009-07-18|author=Hideomi Nakamura (中村秀臣) and Osamu Abe (阿部修) |publisher=National Research Institute for Earth Science and Disaster Prevention (NIED)|language=ja}}{{dead link|date=August 2018|bot=medic}}{{cbignore|bot=medic}}</ref>
*1979 - {{nihongo|Toshio Kuroda|黒田登志雄|Kuroda Toshio}} and Rolf Lacmann, of the [[Braunschweig University of Technology]], publish ''Growth Mechanism of Ice from Vapour Phase and its Growth Forms''.
*1979 - {{nihongo|Toshio Kuroda|黒田登志雄|Kuroda Toshio}} and Rolf Lacmann, of the [[Braunschweig University of Technology]], publish ''Growth Mechanism of Ice from Vapour Phase and its Growth Forms''.
* 1983 August - Astronauts make snow crystals in [[orbital spaceflight|orbit]] on the [[Space Shuttle Challenger|Space Shuttle ''Challenger'']] during [[Space mission|mission]] [[STS-8]].<ref>[[Asahi shimbun]] obtained experimental right and the idea contest picked up Japanese high school student's idea. Citation:{{Cite web|url=http://www.kelk.co.jp/useful/zoku8.html|script-title=ja:第8話「25年前に宇宙実験室で人工雪作り」|publisher=[[:ja:KELK|KELK]]| location=[[Hiratsuka, Kanagawa]]|language =Japanese|trans-title=Story No.8 Artificial snow in experimental chamber 25 years ago|archiveurl=http://www.kelk.co.jp/useful/zoku8.html|archivedate =2009-10-23|accessdate=2009-10-23}}</ref>
* 1983 August - Astronauts make snow crystals in [[orbital spaceflight|orbit]] on the [[Space Shuttle Challenger|Space Shuttle ''Challenger'']] during [[Space mission|mission]] [[STS-8]].<ref>[[Asahi shimbun]] obtained experimental right and the idea contest picked up Japanese high school student's idea. Citation: {{Cite web|url=http://www.kelk.co.jp/useful/zoku8.html|script-title=ja:第8話「25年前に宇宙実験室で人工雪作り」|publisher=[[:ja:KELK|KELK]]| location=[[Hiratsuka, Kanagawa]]|language =ja|trans-title=Story No.8 Artificial snow in experimental chamber 25 years ago|access-date=2009-10-23}}</ref>
* 1988 - {{nihongo|Norihiko Fukuta|福田矩彦|Fukuta Norihiko}} et al. make artificial snow crystals in an [[vertical draft|updraft]], confirming the ''Nakaya Diagram''.<ref>{{cite web|url=http://www.city.kaga.ishikawa.jp/yuki/comm/pdf/kantushin/No13.pdf|script-title=ja:花島政人先生を偲んで|accessdate=2009-07-18|author=樋口敬二 (Keizou Higuchi)|format=PDF|publisher=[[Kaga, Ishikawa]]|page=12|language=Japanese|trans-title=Think of the dead, Professor Masato Hanashima}}{{dead link|date=December 2015}}</ref>
* 1988 - {{nihongo|Norihiko Fukuta|福田矩彦|Fukuta Norihiko}} et al. make artificial snow crystals in an [[vertical draft|updraft]], confirming the ''Nakaya Diagram''.<ref>{{cite web|url=http://www.city.kaga.ishikawa.jp/yuki/comm/pdf/kantushin/No13.pdf|script-title=ja:花島政人先生を偲んで|access-date=2009-07-18|author=樋口敬二 (Keizou Higuchi)|publisher=[[Kaga, Ishikawa]]|page=12|language=ja|trans-title=Think of the dead, Professor Masato Hanashima}}{{dead link|date=December 2015}}</ref>


=== 2001 and after ===
=== 2001 and after ===
* 2002 - {{nihongo|Kazuhiko Hiramatsu|平松和彦|Hiramatsu Kazuhiko}} devises a simple snow crystal growth observatory apparatus using a [[Plastic bottle|PET bottle]] cooled by [[dry ice]] in an expanded [[polystyrene]] box.<ref>Awarded by Meteorological Society of Japan in 2002</ref>
* 2002 - {{nihongo|Kazuhiko Hiramatsu|平松和彦|Hiramatsu Kazuhiko}} devises a simple snow crystal growth observatory apparatus using a [[Plastic bottle|PET bottle]] cooled by [[dry ice]] in an expanded [[polystyrene]] box.<ref>Awarded by Meteorological Society of Japan in 2002</ref>
* 2004 September - {{nihongo|Akio Murai|村井昭夫|Murai Akio}} invented the apparatus named [[Literal translation|lit.]] ''Murai-method Artificial Snow Crystal producer'' (Murai式人工雪結晶生成装置) which makes various shape of artificial snow crystals per pre-setting conditions meeting to ''Nakaya diagram'' by vapor generator and its cooling [[Peltier effect]] element.<ref>{{cite web|url=http://www1.linkclub.or.jp/~kinoko/snowclystal/jinkouyuki%20.html|title=Murai式人工雪発生装置による雪結晶|language=Japanese|trans-title=Lit. Snow Crystals by Murai-method Artificial Snow Crystal producer|accessdate=2010-07-26}}</ref><ref>Japanese [[Utility model]] No.3106836</ref>
* 2004 September - {{nihongo|Akio Murai|村井昭夫|Murai Akio}} invented the apparatus named [[Literal translation|lit.]] ''Murai-method Artificial Snow Crystal producer'' (Murai式人工雪結晶生成装置) which makes various shape of artificial snow crystals per pre-setting conditions meeting to ''Nakaya diagram'' by vapor generator and its cooling [[Peltier effect]] element.<ref>{{cite web|url=http://www1.linkclub.or.jp/~kinoko/snowclystal/jinkouyuki%20.html|title=Murai式人工雪発生装置による雪結晶|language=ja|trans-title=Lit. Snow Crystals by Murai-method Artificial Snow Crystal producer|access-date=2010-07-26|url-status=dead|archive-url=https://web.archive.org/web/20100125130606/http://www1.linkclub.or.jp/~kinoko/snowclystal/jinkouyuki%20.html|archive-date=2010-01-25}}</ref><ref>Japanese [[Utility model]] No.3106836</ref>
* 2008 December - {{nihongo|Yoshinori Furukawa|吉川義純|FurukawaYoshinori}} demonstrates conditional snow crystal growth in [[outer space|space]], in ''Solution Crystallization Observation Facility (SCOF)'' on the [[Japanese Experiment Module|JEM]] (Kibō), remotely controlled from Tsukuba Space Center of [[Japan Aerospace Exploration Agency|JAXA]].<ref>{{cite web|url=http://kibo.jaxa.jp/experiment/theme/first/ice_crystal_start.html|title=Crystal growth in space| publisher=[[Japan Aerospace Exploration Agency|JAXA]]|language=Japanese|archiveurl =http://kibo.jaxa.jp/experiment/theme/first/ice_crystal_start.html|archivedate =2009-07-22}}</ref><ref>Approximately 100 times of experiments till March 2009, outcome would be good hint for ultra-pure [[silicon]] crystallizing, [[Yomiuri Shimbun]] 2 Dec. 2008 Evening edition page 14</ref>
* 2008 December - {{nihongo|Yoshinori Furukawa|吉川義純|FurukawaYoshinori}} demonstrates conditional snow crystal growth in [[outer space|space]], in ''Solution Crystallization Observation Facility (SCOF)'' on the [[Japanese Experiment Module|JEM]] (Kibō), remotely controlled from Tsukuba Space Center of [[Japan Aerospace Exploration Agency|JAXA]].<ref>{{cite web|url=http://kibo.jaxa.jp/experiment/theme/first/ice_crystal_start.html|archive-url=https://web.archive.org/web/20090722010101/http://kibo.jaxa.jp/experiment/theme/first/ice_crystal_start.html|title=Crystal growth in space| publisher=[[Japan Aerospace Exploration Agency|JAXA]]|language=ja|url-status=dead|archive-date =2009-07-22}}</ref><ref>Approximately 100 times of experiments till March 2009, outcome would be good hint for ultra-pure [[silicon]] crystallizing, [[Yomiuri Shimbun]] 2 Dec. 2008 Evening edition page 14</ref>


==Notes and references==
==Notes and references==
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==Sources cited==
==Sources cited==
*{{cite web|url=http://dujs.dartmouth.edu/wp-content/uploads/2008/04/snowflakes1.pdf|title=DUJS online, The history of the science of snowflakes|accessdate =2009-07-18|author=Omolara Olowoyeye|format=PDF|publisher=[[Dartmouth College]]|archiveurl=http://dujs.dartmouth.edu/wp-content/uploads/2008/04/snowflakes1.pdf|archivedate =April 2008}}
*{{cite web|url=http://dujs.dartmouth.edu/wp-content/uploads/2008/04/snowflakes1.pdf|archive-url=https://web.archive.org/web/19700101010101/http://dujs.dartmouth.edu/wp%2Dcontent/uploads/2008/04/snowflakes1.pdf|title=DUJS online, The history of the science of snowflakes|access-date =2009-07-18|author=Omolara Olowoyeye|publisher=[[Dartmouth College]]|url-status=dead|archive-date =1970-01-01}}
*{{cite web|title=雪：冬に咲く華(Yuki: Fuyu ni saku hana)|url=http://www.ndl.go.jp/jp/gallery/permanent/pdf/134.pdf|archiveurl=http://www.ndl.go.jp/jp/gallery/permanent/pdf/134.pdf|trans-title=Snow: Blooming flower in winter|publisher=[[National Diet Library]]|language=Japanese|format=PDF|archivedate=2004-11-18|accessdate=2009-07-18}}
*{{cite web|title=雪：冬に咲く華(Yuki: Fuyu ni saku hana)|url=http://www.ndl.go.jp/jp/gallery/permanent/pdf/134.pdf|trans-title=Snow: Blooming flower in winter|publisher=[[National Diet Library]]|language=ja|access-date=2009-07-18}}
*{{cite web|title=今日も星日和(kyomo hoshi biyori)|url=http://hoshi-biyori.cocolog-nifty.com/star/2008/02/post_29d6.html|archiveurl=http://hoshi-biyori.cocolog-nifty.com/star/2008/02/post_29d6.html|trans-title=Goodya with Stars, today too|language=Japanese|archivedate=2008-02-17|accessdate=2009-07-18}}
*{{cite web|title=今日も星日和(kyomo hoshi biyori)|url=http://hoshi-biyori.cocolog-nifty.com/star/2008/02/post_29d6.html|trans-title=Goodya with Stars, today too|language=ja|access-date=2009-07-18}}
*{{cite web|title=雪研究の歴史(Yuki kenkyu no rekishi)|url=http://acha758.blog24.fc2.com/blog-entry-181.html|archiveurl=http://acha758.blog24.fc2.com/blog-entry-181.html|trans-title=History of research for snow
*{{cite web|title=雪研究の歴史(Yuki kenkyu no rekishi)|url=http://acha758.blog24.fc2.com/blog-entry-181.html|trans-title=History of research for snow
|publisher=acha's bookshelf|language=Japanese|archivedate=2009-03-02|accessdate=2009-07-18}}
|publisher=acha's bookshelf|language=ja|access-date=2009-07-18}}


== See also ==
== See also ==
Line 68: Line 72:
*[http://dujs.dartmouth.edu/wp-content/uploads/2008/04/snowflakes1.pdf The history of the science of snowflakes]
*[http://dujs.dartmouth.edu/wp-content/uploads/2008/04/snowflakes1.pdf The history of the science of snowflakes]
*[http://iss.jaxa.jp/library/video/ice_crystal_081202.html Movie: Snow Crystal growth in space by JAXA on 2 December 2008] (3 times fast replay) (in Japanese)
*[http://iss.jaxa.jp/library/video/ice_crystal_081202.html Movie: Snow Crystal growth in space by JAXA on 2 December 2008] (3 times fast replay) (in Japanese)
*[http://SnowCrystals.com SnowCrystals.com]


{{DEFAULTSORT:Timeline of snowflake research}}
{{DEFAULTSORT:Timeline of snowflake research}}

Latest revision as of 19:53, 22 November 2023

The hexagonal snowflake, a crystalline formation of ice, has intrigued people throughout history. This is a chronology of interest and research into snowflakes. Artists, philosophers, and scientists have wondered at their shape, recorded them by hand or in photographs, and attempted to recreate hexagonal snowflakes.

Wilson Alwyn Bentley (February 9, 1865 – December 23, 1931), also known as Snowflake Bentley, was an American meteorologist and photographer, who was the first known person to take detailed photographs of snowflakes and record their features.[1] He perfected a process of catching flakes on black velvet in such a way that their images could be captured before they either melted or sublimated.

Chronological list

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BC to 1900

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1901 to 2000

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  • 1901 - Wilson Bentley publishes a series of photographs of individual snowflakes in the Monthly Weather Review.
  • 1903 - Svante Arrhenius describes crystallization process in Lehrbuch der Kosmischen Physik.
  • 1904 - Helge von Koch discover the fractal curves to be a mathematical description of snowflakes.
  • 1931 - Wilson Bentley and William Jackson Humphreys publish Snow Crystals
  • 1936 - Ukichiro Nakaya creates snow crystals and charts the relationship between temperature and water vapor saturation, later called the Nakaya Diagram.
  • 1938 - Ukichiro Nakaya publishes Snow (雪)
  • 1949 - Ukichiro Nakaya publishes Research of snow (雪の研究, Yuki no kenkyu)
  • 1952 - Marcel R. de Quervain et al. define ten major types of snow crystals, including hail and graupel in IUGG for the Swiss Federal Institute for Snow and Avalanche Research.
  • 1954 - Harvard University Press publishes Ukichiro Nakaya's Snow Crystals: Natural and Artificial.
  • 1960 - Teisaku Kobayashi (小林禎作, Kobayashi Teisaku), verifies and improves the Nakaya Diagram with the Kobayashi Diagram.[15]
  • 1962 - Cyoji Magono (孫野長治, Magono Cyōji) describes meteorological sorting of snow crystal types in clouds.[16]
  • 1979 - Toshio Kuroda (黒田登志雄, Kuroda Toshio) and Rolf Lacmann, of the Braunschweig University of Technology, publish Growth Mechanism of Ice from Vapour Phase and its Growth Forms.
  • 1983 August - Astronauts make snow crystals in orbit on the Space Shuttle Challenger during mission STS-8.[17]
  • 1988 - Norihiko Fukuta (福田矩彦, Fukuta Norihiko) et al. make artificial snow crystals in an updraft, confirming the Nakaya Diagram.[18]

2001 and after

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  • 2002 - Kazuhiko Hiramatsu (平松和彦, Hiramatsu Kazuhiko) devises a simple snow crystal growth observatory apparatus using a PET bottle cooled by dry ice in an expanded polystyrene box.[19]
  • 2004 September - Akio Murai (村井昭夫, Murai Akio) invented the apparatus named lit. Murai-method Artificial Snow Crystal producer (Murai式人工雪結晶生成装置) which makes various shape of artificial snow crystals per pre-setting conditions meeting to Nakaya diagram by vapor generator and its cooling Peltier effect element.[20][21]
  • 2008 December - Yoshinori Furukawa (吉川義純, FurukawaYoshinori) demonstrates conditional snow crystal growth in space, in Solution Crystallization Observation Facility (SCOF) on the JEM (Kibō), remotely controlled from Tsukuba Space Center of JAXA.[22][23]

Notes and references

[edit]
  1. ^ 雪研究の歴史 [History of research of snow] (in Japanese). Retrieved 2009-07-18.
  2. ^ Olowoyeye, Omolara (2003). "The History of the Science of Snowflakes". Dartmouth Undergraduate Journal of Science. 5 (3): 18–20. Archived (PDF) from the original on 2020-07-25. Retrieved 2022-08-22.
  3. ^ The passage reads "凡草木花多五出，雪花獨六出，雪花曰霙，雪雲曰同雲".
  4. ^ Kepler, Johannes (1966) [1611]. De nive sexangula [The Six-sided Snowflake]. Oxford: Clarendon Press. OCLC 974730.
  5. ^ De figura nivis dissertatio、Landmarks of science. Open Library. 1661. OL 20301802M. Retrieved 2009-10-20.
  6. ^ The ruins of Smeerenburg – a fragmented past, there were already signs of decay when Friedrich Martens came to visit in 1671
  7. ^ Martens Island is named for Friedrich Martens, a German physician who visited Spitsbergen in 1671
  8. ^ Katechismus Der Natuur, Deel 2 (1778)
  9. ^ Martinet, Johannes Florentius: Katechismus der natuur.[permanent dead link‍]
  10. ^ Joannes Florentius Martinet
  11. ^ "36. CHICKERING, Mrs. Francis E., Dorothy Sloan Books – Bulletin 9 (12/92)" (PDF). December 1992. Retrieved 2009-10-20.
  12. ^ Cloud Crystals - a Snow-Flake Album, Author: Chickering, Frances E., Year: 1865 Archived 2011-07-15 at the Wayback Machine
  13. ^ Warwick F. Vincent. "Cyanobacterial Dominance in the Polar Regions, Introduction" (PDF). Université Laval. Retrieved 2009-07-18.
  14. ^ 1 Temperature, .... also A. A. Sigson in Rybinsk, Russia, had been making micro-photographs,....
  15. ^ 油川英明 (Hideaki Aburakawa). ２．雪は「天からの手紙」か？ [2. Is snow "The letter from the sky"?] (PDF) (in Japanese). The Meteorological Society of Japan, Hokkaido Branch. Archived from the original (PDF) on 2011-04-10. Retrieved 2009-07-18.
  16. ^ Hideomi Nakamura (中村秀臣) and Osamu Abe (阿部修). "Density of the Dai1y New Snow Observed in Shinjō, Yamagata" (PDF) (in Japanese). National Research Institute for Earth Science and Disaster Prevention (NIED). Retrieved 2009-07-18.[dead link‍]
  17. ^ Asahi shimbun obtained experimental right and the idea contest picked up Japanese high school student's idea. Citation: 第8話「25年前に宇宙実験室で人工雪作り」 [Story No.8 Artificial snow in experimental chamber 25 years ago] (in Japanese). Hiratsuka, Kanagawa: KELK. Retrieved 2009-10-23.
  18. ^ 樋口敬二 (Keizou Higuchi). 花島政人先生を偲んで [Think of the dead, Professor Masato Hanashima] (PDF) (in Japanese). Kaga, Ishikawa. p. 12. Retrieved 2009-07-18.[dead link‍]
  19. ^ Awarded by Meteorological Society of Japan in 2002
  20. ^ "Murai式人工雪発生装置による雪結晶" [Lit. Snow Crystals by Murai-method Artificial Snow Crystal producer] (in Japanese). Archived from the original on 2010-01-25. Retrieved 2010-07-26.
  21. ^ Japanese Utility model No.3106836
  22. ^ "Crystal growth in space" (in Japanese). JAXA. Archived from the original on 2009-07-22.
  23. ^ Approximately 100 times of experiments till March 2009, outcome would be good hint for ultra-pure silicon crystallizing, Yomiuri Shimbun 2 Dec. 2008 Evening edition page 14

Sources cited

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See also

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