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Old page wikitext, before the edit (old_wikitext ) | '{{Short description|Explosion from fission or fusion reaction}}
[[File:Operation Upshot-Knothole - Badger 001.jpg|right|250px|thumb|A 23 kiloton tower shot called [[Operation Upshot–Knothole|BADGER]], fired on April 18, 1953, at the [[Nevada Test Site]], as part of the [[Operation Upshot–Knothole]] [[nuclear testing|nuclear test series]].]]
[[File:Greenhouse George Early Fireball.ogv|right|250px|thumb|The [[operation Greenhouse|Greenhouse]] George test early fireball.]]
[[File:Operation Upshot test.ogv|thumb|Upshot–Knothole Grable test (film)]]
{{nuclear weapons}}
A '''nuclear explosion''' is an [[explosion]] that occurs as a result of the rapid release of energy from a high-speed [[nuclear reaction]]. The driving reaction may be [[nuclear fission]] or [[nuclear fusion]] or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a [[pure fusion weapon]] remains a hypothetical device. Nuclear explosions are used in [[nuclear weapons]] and [[nuclear testing]].
Atmospheric nuclear explosions are associated with [[mushroom cloud]]s, although mushroom clouds can occur with large chemical explosions. It is possible to have an air-burst nuclear explosion without those clouds. Nuclear explosions produce [[Ionizing radiation|radiation]] and [[Nuclear fallout|radioactive debris]] that is harmful to humans and can cause moderate to severe skin burns, eye damage, [[radiation sickness]], [[radiation-induced cancer]] and possible death depending on how far a person is from the blast radius.<ref>{{Cite web|date=2019-04-22|title=CDC Radiation Emergencies {{!}} Frequently Asked Questions About a Nuclear Blast|url=https://www.cdc.gov/nceh/radiation/emergencies/nuclearfaq.htm|access-date=2021-04-29|website=www.cdc.gov|language=en-us}}</ref> Nuclear explosions can also have detrimental effects on the climate, lasting from months to years. In a 1983 article, [[Carl Sagan]] claimed that a small-scale nuclear war could release enough particles into the atmosphere to cause the planet to cool and cause crops, animals, and agriculture to disappear across the globe—an effect named [[nuclear winter]].<ref>{{Cite journal|last=Rubinson|first=Paul|date=2014-01-02|title=The global effects of nuclear winter: science and antinuclear protest in the United States and the Soviet Union during the 1980s|url=http://www.tandfonline.com/doi/abs/10.1080/14682745.2012.759560|journal=Cold War History|language=en|volume=14|issue=1|pages=47–69|doi=10.1080/14682745.2012.759560|s2cid=153883165|issn=1468-2745}}</ref>
==History ==
{{Main article|Nuclear weapons testing|List of nuclear weapons tests|History of nuclear weapons}}
=== The beginning (fission explosions) ===
The first manmade nuclear explosion occurred on July 16, 1945, at 5:50 am on the [[Trinity (nuclear test)|Trinity]] test site near [[Alamogordo, New Mexico]], in the [[United States]], an area now known as the [[White Sands Missile Range]].<ref>{{cite web|last1=U.S. Department of Energy|title=Trinity Site - World's First Nuclear Explosion|url=https://energy.gov/management/trinity-site-worlds-first-nuclear-explosion|website=Energy.gov Office of Management|access-date=23 December 2016}}</ref><ref>{{cite journal|last1=Taylor|first1=Alan|title=70 Years Since Trinity: The Day the Nuclear Age Began|journal=The Atlantic|date=July 16, 2015|url=https://www.theatlantic.com/photo/2015/07/70-years-since-trinity-when-we-tested-nuclear-bombs/398735/|access-date=23 December 2016}}</ref> The event involved the full-scale testing of an implosion-type fission [[atomic bomb]]. In a memorandum to the U.S. Secretary of War, [[Leslie Groves|General Leslie Groves]] describes the yield as equivalent to 15,000 to 20,000 tons of TNT.<ref>{{cite news|last1=Groves|first1=General Leslie|title=The First Nuclear Test in New Mexico: Memorandum for the Secretary of War, Subject: The Test|url=https://www.pbs.org/wgbh/americanexperience/features/primary-resources/truman-bombtest/|access-date=23 December 2016|agency=PBS.org|publisher=United States War Department|date=July 18, 1945}}</ref> Following this test, a uranium-gun type nuclear bomb ([[Little Boy]]) was dropped on the Japanese city of Hiroshima on August 6, 1945, with a blast yield of 15 kilotons; and a plutonium implosion-type bomb ([[Fat Man]]) on Nagasaki on August 9, 1945, with a blast yield of 21 kilotons. Fat Man and Little Boy are the only instances in history of nuclear weapons being used as an act of war.
On August 29, 1949, the USSR became the second country to successfully test a nuclear weapon. RDS-1, dubbed "First Lightning" by the Soviets and "Joe-1" by the US, produced a 20 kiloton explosion and was essentially a copy of the American Fat Man plutonium implosion design.<ref>{{Cite web|title=VENONA Dated Documents|url=https://www.nsa.gov/news-features/declassified-documents/venona/dated/|access-date=2021-04-30|website=www.nsa.gov}}</ref>
=== Thermonuclear Era (fusion explosions) ===
The United States' first thermonuclear weapon, [[Ivy Mike]], was detonated on 1 November 1952 at [[Enewetak Atoll]] and yielded 10 Megatons of explosive force. The first thermonuclear weapon tested by the USSR, RDS-6s (Joe-4), was detonated on August 12, 1953, at the [[Semipalatinsk Test Site]] in [[Kazakhstan]] and yielded about 400 kilotons.<ref>{{Cite web|title=The Soviet Nuclear Weapons Program|url=http://nuclearweaponarchive.org/Russia/Sovwpnprog.html|access-date=2021-04-30|website=nuclearweaponarchive.org}}</ref> RDS-6s' design, nicknamed the Sloika, was remarkably similar to a version designed for the U.S. by [[Edward Teller]] nicknamed the "[[Alarm Clock (nuclear device)|Alarm Clock]]", in that the nuclear device was a two-stage weapon: the first explosion was triggered by [[Nuclear fission|fission]] and the second more powerful explosion by [[Nuclear fusion|fusion]]. The Sloika core consisted of a series of concentric spheres with alternating materials to help boost the explosive yield.
=== Proliferation Era ===
In the years following [[World War II]], eight countries have conducted nuclear tests with 2475 devices fired in 2120 tests.<ref name="Yang">{{citation|last1=Yang|first1=Xiaoping|first2=Robert|last2=North|first3=Carl|last3=Romney|first4=Paul G.|last4=Richards|date=August 2000|title=Worldwide Nuclear Explosions|url=http://www.ldeo.columbia.edu/~richards/my_papers/WW_nuclear_tests_IASPEI_HB.pdf|access-date=2013-12-31}}</ref> In 1963, the United States, [[Soviet Union]], and [[United Kingdom]] signed the [[Limited Test Ban Treaty]], pledging to refrain from testing nuclear weapons in the atmosphere, underwater, or in outer space. The treaty permitted underground tests. Many other non-nuclear nations acceded to the Treaty following its entry into force; however, [[France]] and [[China]] (both nuclear weapons states) have not.{{citation needed|date=December 2016}}
The primary application to date has been military (i.e. nuclear weapons), and the remainder of explosions include the following:
* [[Nuclear pulse propulsion]], including using a nuclear explosion as asteroid deflection strategy.
* Power generation; see [[PACER (fusion)|PACER]]
* [[Peaceful nuclear explosions]]
==Nuclear weapons==
{{Main article|Nuclear weapons|History of nuclear weapons}}
[[Atomic bombings of Hiroshima and Nagasaki|Two nuclear weapons have been deployed]] in combat—both by the United States against [[Japan]] in World War II. The first event occurred on the morning of 6 August 1945, when the [[United States Army Air Forces]] dropped a [[uranium]] gun-type device, code-named "Little Boy", on the city of [[Hiroshima]], killing 70,000 people, including 20,000 Japanese combatants and 20,000 Korean [[Unfree labour|slave laborers]]. The second event occurred three days later when the United States Army Air Forces dropped a [[plutonium]] implosion-type device, code-named "Fat Man", on the city of [[Nagasaki]]. It killed 39,000 people, including 27,778 Japanese munitions employees, 2,000 Korean slave laborers, and 150 Japanese combatants. In total, around 109,000 people were killed in these bombings. Nuclear weapons are largely seen as a 'deterrent' by most governments; the sheer scale of the destruction caused by nuclear weapons has discouraged their use in warfare. {{citation needed|date=December 2016}}
===Nuclear testing===
{{Main article|Nuclear testing|List of nuclear weapons tests}}
Since the [[Trinity (nuclear test)|Trinity test]] and excluding combat use, countries with nuclear weapons have detonated roughly 1,700 nuclear explosions, all but six as tests. Of these, six were [[peaceful nuclear explosion]]s. Nuclear tests are experiments carried out to determine the effectiveness, yield and explosive capability of nuclear weapons. Throughout the 20th century, most nations that have developed nuclear weapons had a staged test of them. Testing nuclear weapons can yield information about how the weapons work, as well as how the weapons behave under various conditions and how structures behave when subjected to a nuclear explosion. Additionally, nuclear testing has often been used as an indicator of scientific and military strength, and many tests have been overtly political in their intention; most [[list of countries with nuclear weapons|nuclear weapons states]] publicly declared their nuclear status by means of a nuclear test. Nuclear tests have taken place at more than 60 locations across the world; some in secluded areas and others more densely populated.<ref>{{Cite web|title=The legacy of nuclear testing|url=https://www.icanw.org/the_legacy_of_nuclear_testing|access-date=2021-04-29|website=ICAN|language=en}}</ref> Detonation of nuclear weapons (in a test or during war) releases radioactive fallout that concerned the public in the 1950s. This led to the Limited Test Ban Treaty of 1963 signed by the United States, Great Britain, and the Soviet Union. This treaty banned nuclear weapons testing in the atmosphere, outer space, and under water.<ref>{{Cite web|title=Our Documents - Test Ban Treaty (1963)|url=https://www.ourdocuments.gov/doc.php?flash=false&doc=95#:~:text=On%20August%205,%201963,%20the%20Limited%20Test%20Ban,the%20atmosphere,%20in%20outer%20space,%20and%20under%20water.|access-date=2021-04-29|website=www.ourdocuments.gov| date=9 April 2021 }}</ref>
==Effects of nuclear explosions==
{{Main article |Effects of nuclear explosions}}
=== Shockwaves and radiation ===
The dominant effect of a nuclear weapon (the blast and thermal radiation) are the same physical damage mechanisms as conventional [[Explosive material|explosive]]s, but the energy produced by a nuclear explosive is millions of times more per gram and the temperatures reached are in the tens of [[megakelvin]]. Nuclear weapons are quite different from conventional weapons because of the huge amount of explosive energy that they can put out and the different kinds of effects they make, like high temperatures and nuclear radiation.
The devastating impact of the explosion does not stop after the initial blast, as with conventional explosives. A cloud of nuclear radiation travels from the [[hypocenter]] of the explosion, causing an impact to life forms even after the heat waves have ceased. The health effects on humans from nuclear explosions comes from the initial shockwave, the radiation exposure, and the fallout. The initial shockwave and radiation exposure come from the immediate blast which has different effects on the health of humans depending on the distance from the center of the blast. The shockwave can rupture eardrums and lungs, can also throw people back, and cause buildings to collapse.<ref>{{Cite book|date=2005-09-06|title=Effects of Nuclear Earth-Penetrator and Other Weapons|url=http://dx.doi.org/10.17226/11282|doi=10.17226/11282|isbn=978-0-309-09673-7}}</ref> Radiation exposure is delivered at the initial blast and can continue for an extended amount of time in the form of nuclear fallout. The main health effect of nuclear fallout is cancer and birth defects because radiation causes changes in cells that can either kill or make them abnormal.<ref>{{Cite web|title=Effects to the Human Body From Nuclear Fallout|url=http://large.stanford.edu/courses/2017/ph241/shimp1/|access-date=2021-04-29|website=large.stanford.edu}}</ref> Any nuclear explosion (or [[nuclear war]]) would have worldwide-ranging, long-term, catastrophic effects. [[Radioactive contamination]] would cause [[genetic mutation]]s and cancer across many generations.<ref>[[Malcolm Fraser]] and [[Tilman Ruff]]. [http://www.theage.com.au/comment/2015-is-the-year-to-ban-nuclear-weapons-20150219-13jali.html#ixzz4BTMwrzJ2 2015 is the year to ban nuclear weapons],
''[[The Age]]'', February 19, 2015.</ref>
=== Nuclear winter ===
Another potential devastating effect of nuclear war is termed [[nuclear winter]]. The idea become popularized in mainstream culture during the 1980s, when [[Richard P. Turco]], [[Owen Toon]], Thomas P. Ackerman, [[James B. Pollack]] and [[Carl Sagan]] collaborated and produced a scientific study which suggested the Earth's weather and climate can be severely impacted by nuclear war.<ref>{{Cite journal|last1=Turco|first1=R. P.|last2=Toon|first2=O. B.|last3=Ackerman|first3=T. P.|last4=Pollack|first4=J. B.|last5=Sagan|first5= Carl |date= 1983-12-23|title=Nuclear Winter: Global Consequences of Multiple Nuclear Explosions|url=https://www.science.org/doi/10.1126/science.222.4630.1283|journal=Science|language= en |volume= 222|issue=4630|pages=1283–1292|doi=10.1126/science.222.4630.1283|issn=0036-8075|pmid=17773320|bibcode=1983Sci...222.1283T|s2cid=45515251}}</ref> The main idea is that once a conflict begins and the aggressors start detonating nuclear weapons, the explosions will eject small particles from the Earth's surface into the atmosphere as well as nuclear particles. It's also assumed that fires will break out and become widespread, similar to what happened at Hiroshima and Nagasaki during the end of WWII, which will cause soot and other harmful particles to also be introduced into the atmosphere.<ref>{{Cite web|date=2006-06-24|url=http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|access-date=2021-04-30|archive-url=https://web.archive.org/web/20060624185903/http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|archive-date=2006-06-24|title = Radiation Dose Reconstruction: U.S. Occupation Forces In Hiroshima and Nagasaki, Japan, 1945-1946}}</ref> Once these harmful particles are lofted, strong upper-level winds in the troposphere can transport them thousands of kilometers and can end up transporting nuclear fallout and also alter the Earth's radiation budget. Once enough small particles are in the atmosphere, they can act as cloud condensation nuclei which will cause global cloud coverage to increase which in turn blocks incoming solar insolation and starts a global cooling period. This is not unlike one of the leading theories about the extinction of most dinosaur species, in that a large explosion ejected small particulate matter into the atmosphere and resulted in a global catastrophe characterized by cooler temperatures, acid rain, and the [[Cretaceous–Paleogene boundary|KT Layer]].<ref>{{Cite web|title=The KT extinction|url=https://ucmp.berkeley.edu/education/events/cowen1b.html|access-date=2021-04-30|website=ucmp.berkeley.edu}}</ref>
==See also==
{{Portal|Nuclear technology}}
* [[Lists of nuclear disasters and radioactive incidents]]
* [[Soviet nuclear well collapses]]
* [[Nuclear weapons in popular culture#List of visual depictions|Visual depictions of nuclear explosions in fiction]]
==References==
{{reflist}}
==External links==
* Video – [https://www.youtube.com/watch?v=JFiBXFFzT5c Nuclear Explosion Power Comparison]
* [https://nuclearsecrecy.com/nukemap/ NUKEMAP2.7 (modelling effects of nuclear explosion of various yield in various cities)]
{{Nuclear Technology}}
{{Authority control}}
{{DEFAULTSORT:Nuclear Explosion}}
[[Category:Nuclear physics]]
[[Category:Nuclear chemistry]]
[[Category:Nuclear weapon design]]
[[Category:Nuclear accidents and incidents]]
[[Category:Articles containing video clips]]' |
New page wikitext, after the edit (new_wikitext ) | '{{Short description|Explosion from fission or fusion reaction}}
[[File:Operation Upshot-Knothole - Badger 001.jpg|right|250px|thumb|A 23 kiloton tower shot called [[Operation Upshot–Knothole|BADGER]], fired on April 18, 1953, at the [[Nevada Test Site]], as part of the [[Operation Upshot–Knothole]] [[nuclear testing|nuclear test series]].]]
[[File:Greenhouse George Early Fireball.ogv|right|250px|thumb|The [[operation Greenhouse|Greenhouse]] George test early fireball.]]
[[File:Operation Upshot test.ogv|thumb|Upshot–Knothole Grable test (film)]]
{{nuclear weapons}}
A '''nuclear explosion''' is an [[explosion]] that occurs as a result of the rapid release of energy from a high-speed [[nuclear reaction|fart]] The driving reaction may be [[nuclear fission]] or [[nuclear fusion]] or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a [[pure fusion weapon]] remains a hypothetical device. Nuclear explosions are used in [[nuclear weapons]] and [[nuclear testing]].
Atmospheric nuclear explosions are associated with [[mushroom cloud]]s, although mushroom clouds can occur with large chemical explosions. It is possible to have an air-burst nuclear explosion without those clouds. Nuclear explosions produce [[Ionizing radiation|radiation]] and [[Nuclear fallout|radioactive debris]] that is harmful to humans and can cause moderate to severe skin burns, eye damage, [[radiation sickness]], [[radiation-induced cancer]] and possible death depending on how far a person is from the blast radius.<ref>{{Cite web|date=2019-04-22|title=CDC Radiation Emergencies {{!}} Frequently Asked Questions About a Nuclear Blast|url=https://www.cdc.gov/nceh/radiation/emergencies/nuclearfaq.htm|access-date=2021-04-29|website=www.cdc.gov|language=en-us}}</ref> Nuclear explosions can also have detrimental effects on the climate, lasting from months to years. In a 1983 article, [[Carl Sagan]] claimed that a small-scale nuclear war could release enough particles into the atmosphere to cause the planet to cool and cause crops, animals, and agriculture to disappear across the globe—an effect named [[nuclear winter]].<ref>{{Cite journal|last=Rubinson|first=Paul|date=2014-01-02|title=The global effects of nuclear winter: science and antinuclear protest in the United States and the Soviet Union during the 1980s|url=http://www.tandfonline.com/doi/abs/10.1080/14682745.2012.759560|journal=Cold War History|language=en|volume=14|issue=1|pages=47–69|doi=10.1080/14682745.2012.759560|s2cid=153883165|issn=1468-2745}}</ref>
==History ==
{{Main article|Nuclear weapons testing|List of nuclear weapons tests|History of nuclear weapons}}
=== The beginning (fission explosions) ===
The first manmade poop explosion occurred on July 16, 1945, at 6:90 am on the [[Trinity (nuclear test)|Trinity]] test site near [[Alamogordo, New Mexico]], in the [[United States]], an area now known as the [[White Sands Missile Range]].<ref>{{cite web|last1=U.S. Department of Energy|title=Trinity Site - World's First Nuclear Explosion|url=https://energy.gov/management/trinity-site-worlds-first-nuclear-explosion|website=Energy.gov Office of Management|access-date=23 December 2016}}</ref><ref>{{cite journal|last1=Taylor|first1=Alan|title=70 Years Since Trinity: The Day the Nuclear Age Began|journal=The Atlantic|date=July 16, 2015|url=https://www.theatlantic.com/photo/2015/07/70-years-since-trinity-when-we-tested-nuclear-bombs/398735/|access-date=23 December 2016}}</ref> The event involved the full-scale testing of an implosion-type fission [[atomic bomb]]. In a memorandum to the U.S. Secretary of War, [[Leslie Groves|General Leslie Groves]] describes the yield as equivalent to 15,000 to 20,000 tons of TNT.<ref>{{cite news|last1=Groves|first1=General Leslie|title=The First Nuclear Test in New Mexico: Memorandum for the Secretary of War, Subject: The Test|url=https://www.pbs.org/wgbh/americanexperience/features/primary-resources/truman-bombtest/|access-date=23 December 2016|agency=PBS.org|publisher=United States War Department|date=July 18, 1945}}</ref> Following this test, a uranium-gun type nuclear bomb ([[Little Boy]]) was dropped on the Japanese city of Hiroshima on August 6, 1945, with a blast yield of 15 kilotons; and a plutonium implosion-type bomb ([[Fat Man]]) on Nagasaki on August 9, 1945, with a blast yield of 21 kilotons. Fat Man and Little Boy are the only instances in history of nuclear weapons being used as an act of war.
On August 29, 1949, the USSR became the second country to successfully test a nuclear weapon. RDS-1, dubbed "First Lightning" by the Soviets and "Joe-1" by the US, produced a 20 kiloton explosion and was essentially a copy of the American Fat Man plutonium implosion design.<ref>{{Cite web|title=VENONA Dated Documents|url=https://www.nsa.gov/news-features/declassified-documents/venona/dated/|access-date=2021-04-30|website=www.nsa.gov}}</ref>
=== Thermonuclear Era (fusion explosions) ===
The United States' first thermonuclear weapon, [[Ivy Mike]], was detonated on 1 November 1952 at [[Enewetak Atoll]] and yielded 10 Megatons of explosive force. The first thermonuclear weapon tested by the USSR, RDS-6s (Joe-4), was detonated on August 12, 1953, at the [[Semipalatinsk Test Site]] in [[Kazakhstan]] and yielded about 400 kilotons.<ref>{{Cite web|title=The Soviet Nuclear Weapons Program|url=http://nuclearweaponarchive.org/Russia/Sovwpnprog.html|access-date=2021-04-30|website=nuclearweaponarchive.org}}</ref> RDS-6s' design, nicknamed the Sloika, was remarkably similar to a version designed for the U.S. by [[Edward Teller]] nicknamed the "[[Alarm Clock (nuclear device)|Alarm Clock]]", in that the nuclear device was a two-stage weapon: the first explosion was triggered by [[Nuclear fission|fission]] and the second more powerful explosion by [[Nuclear fusion|fusion]]. The Sloika core consisted of a series of concentric spheres with alternating materials to help boost the explosive yield.
=== Proliferation????? ===
In the years following [[World War II]], eight countries have conducted nuclear tests with 2475 devices fired in 2120 tests.<ref name="Yang">{{citation|last1=Yang|first1=Xiaoping|first2=Robert|last2=North|first3=Carl|last3=Romney|first4=Paul G.|last4=Richards|date=August 2000|title=Worldwide Nuclear Explosions|url=http://www.ldeo.columbia.edu/~richards/my_papers/WW_nuclear_tests_IASPEI_HB.pdf|access-date=2013-12-31}}</ref> In 1963, the United States, [[Soviet Union]], and [[United Kingdom]] signed the [[Limited Test Ban Treaty]], pledging to refrain from testing nuclear weapons in the atmosphere, underwater, or in outer space. The treaty permitted underground tests. Many other non-nuclear nations acceded to the Treaty following its entry into force; however, [[France]] and [[China]] (both nuclear weapons states) have not.{{citation needed|date=December 2016}}
The primary application to date has been military (i.e. nuclear weapons), and the remainder of explosions include the following:
* [[Nuclear pulse propulsion]], including using a nuclear explosion as asteroid deflection strategy.
* Power generation; see [[PACER (fusion)|PACER]]
* [[Peaceful nuclear explosions]]
==Nuclear fart poopy==
{{Main article|Nuclear weapons|History of nuclear weapons}}
[[Atomic bombings of Hiroshima and Nagasaki|Two nuclear weapons have been deployed]] in combat—both by the United States against [[Japan]] in World War II. The first event occurred on the morning of 6 August 1945, when the [[United States Army Air Forces]] dropped a [[uranium]] gun-type device, code-named "Little Boy", on the city of [[Hiroshima]], killing 70,000 people, including 20,000 Japanese combatants and 20,000 Korean [[Unfree labour|slave laborers]]. The second event occurred three days later when the United States Army Air Forces dropped a [[plutonium]] implosion-type device, code-named "Fat Man", on the city of [[Nagasaki]]. It killed 39,000 people, including 27,778 Japanese munitions employees, 2,000 Korean slave laborers, and 150 Japanese combatants. In total, around 109,000 people were killed in these bombings. Nuclear weapons are largely seen as a 'deterrent' by most governments; the sheer scale of the destruction caused by nuclear weapons has discouraged their use in warfare. {{citation needed|date=December 2016}}
===Nuclear testing===
{{Main article|Nuclear testing|List of nuclear weapons tests}}
Since the [[Trinity (nuclear test)|Trinity test]] and excluding combat use, countries with nuclear weapons have detonated roughly 1,700 nuclear explosions, all but six as tests. Of these, six were [[peaceful nuclear explosion]]s. Nuclear tests are experiments carried out to determine the effectiveness, yield and explosive capability of nuclear weapons. Throughout the 20th century, most nations that have developed nuclear weapons had a staged test of them. Testing nuclear weapons can yield information about how the weapons work, as well as how the weapons behave under various conditions and how structures behave when subjected to a nuclear explosion. Additionally, nuclear testing has often been used as an indicator of scientific and military strength, and many tests have been overtly political in their intention; most [[list of countries with nuclear weapons|nuclear weapons states]] publicly declared their nuclear status by means of a nuclear test. Nuclear tests have taken place at more than 60 locations across the world; some in secluded areas and others more densely populated.<ref>{{Cite web|title=The legacy of nuclear testing|url=https://www.icanw.org/the_legacy_of_nuclear_testing|access-date=2021-04-29|website=ICAN|language=en}}</ref> Detonation of nuclear weapons (in a test or during war) releases radioactive fallout that concerned the public in the 1950s. This led to the Limited Test Ban Treaty of 1963 signed by the United States, Great Britain, and the Soviet Union. This treaty banned nuclear weapons testing in the atmosphere, outer space, and under water.<ref>{{Cite web|title=Our Documents - Test Ban Treaty (1963)|url=https://www.ourdocuments.gov/doc.php?flash=false&doc=95#:~:text=On%20August%205,%201963,%20the%20Limited%20Test%20Ban,the%20atmosphere,%20in%20outer%20space,%20and%20under%20water.|access-date=2021-04-29|website=www.ourdocuments.gov| date=9 April 2021 }}</ref>
==Effects of nuclear explosions==
{{Main article |Effects of nuclear explosions}}
=== Shockwaves and radiation ===
The dominant effect of a nuclear weapon (the blast and thermal radiation) are the same physical damage mechanisms as conventional [[Explosive material|explosive]]s, but the energy produced by a nuclear explosive is millions of times more per gram and the temperatures reached are in the tens of [[megakelvin]]. Nuclear weapons are quite different from conventional weapons because of the huge amount of explosive energy that they can put out and the different kinds of effects they make, like high temperatures and nuclear radiation.
The devastating impact of the explosion does not stop after the initial blast, as with conventional explosives. A cloud of nuclear radiation travels from the [[hypocenter]] of the explosion, causing an impact to life forms even after the heat waves have ceased. The health effects on humans from nuclear explosions comes from the initial shockwave, the radiation exposure, and the fallout. The initial shockwave and radiation exposure come from the immediate blast which has different effects on the health of humans depending on the distance from the center of the blast. The shockwave can rupture eardrums and lungs, can also throw people back, and cause buildings to collapse.<ref>{{Cite book|date=2005-09-06|title=Effects of Nuclear Earth-Penetrator and Other Weapons|url=http://dx.doi.org/10.17226/11282|doi=10.17226/11282|isbn=978-0-309-09673-7}}</ref> Radiation exposure is delivered at the initial blast and can continue for an extended amount of time in the form of nuclear fallout. The main health effect of nuclear fallout is cancer and birth defects because radiation causes changes in cells that can either kill or make them abnormal.<ref>{{Cite web|title=Effects to the Human Body From Nuclear Fallout|url=http://large.stanford.edu/courses/2017/ph241/shimp1/|access-date=2021-04-29|website=large.stanford.edu}}</ref> Any nuclear explosion (or [[nuclear war]]) would have worldwide-ranging, long-term, catastrophic effects. [[Radioactive contamination]] would cause [[genetic mutation]]s and cancer across many generations.<ref>[[Malcolm Fraser]] and [[Tilman Ruff]]. [http://www.theage.com.au/comment/2015-is-the-year-to-ban-nuclear-weapons-20150219-13jali.html#ixzz4BTMwrzJ2 2015 is the year to ban nuclear weapons],
''[[The Age]]'', February 19, 2015.</ref>
=== Nuclear winter ===
Another potential devastating effect of nuclear war is termed [[nuclear winter]]. The idea become popularized in mainstream culture during the 1980s, when [[Richard P. Turco]], [[Owen Toon]], Thomas P. Ackerman, [[James B. Pollack]] and [[Carl Sagan]] collaborated and produced a scientific study which suggested the Earth's weather and climate can be severely impacted by nuclear war.<ref>{{Cite journal|last1=Turco|first1=R. P.|last2=Toon|first2=O. B.|last3=Ackerman|first3=T. P.|last4=Pollack|first4=J. B.|last5=Sagan|first5= Carl |date= 1983-12-23|title=Nuclear Winter: Global Consequences of Multiple Nuclear Explosions|url=https://www.science.org/doi/10.1126/science.222.4630.1283|journal=Science|language= en |volume= 222|issue=4630|pages=1283–1292|doi=10.1126/science.222.4630.1283|issn=0036-8075|pmid=17773320|bibcode=1983Sci...222.1283T|s2cid=45515251}}</ref> The main idea is that once a conflict begins and the aggressors start detonating nuclear weapons, the explosions will eject small particles from the Earth's surface into the atmosphere as well as nuclear particles. It's also assumed that fires will break out and become widespread, similar to what happened at Hiroshima and Nagasaki during the end of WWII, which will cause soot and other harmful particles to also be introduced into the atmosphere.<ref>{{Cite web|date=2006-06-24|url=http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|access-date=2021-04-30|archive-url=https://web.archive.org/web/20060624185903/http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|archive-date=2006-06-24|title = Radiation Dose Reconstruction: U.S. Occupation Forces In Hiroshima and Nagasaki, Japan, 1945-1946}}</ref> Once these harmful particles are lofted, strong upper-level winds in the troposphere can transport them thousands of kilometers and can end up transporting nuclear fallout and also alter the Earth's radiation budget. Once enough small particles are in the atmosphere, they can act as cloud condensation nuclei which will cause global cloud coverage to increase which in turn blocks incoming solar insolation and starts a global cooling period. This is not unlike one of the leading theories about the extinction of most dinosaur species, in that a large explosion ejected small particulate matter into the atmosphere and resulted in a global catastrophe characterized by cooler temperatures, acid rain, and the [[Cretaceous–Paleogene boundary|KT Layer]].<ref>{{Cite web|title=The KT extinction|url=https://ucmp.berkeley.edu/education/events/cowen1b.html|access-date=2021-04-30|website=ucmp.berkeley.edu}}</ref> megan treaners deadddddd
==See also==
{{Portal|Nuclear technology}}
* [[Lists of nuclear disasters and radioactive incidents]]
* [[Soviet nuclear well collapses]]
* [[Nuclear weapons in popular culture#List of visual depictions|Visual depictions of nuclear explosions in fiction]]
==References==
{{reflist}}
==External links==
* Video – [https://www.youtube.com/watch?v=JFiBXFFzT5c Nuclear Explosion Power Comparison]
* [https://nuclearsecrecy.com/nukemap/ NUKEMAP2.7 (modelling effects of nuclear explosion of various yield in various cities)]
{{Nuclear Technology}}
{{Authority control}}
{{DEFAULTSORT:Nuclear Explosion}}
[[Category:Nuclear physics]]
[[Category:Nuclear chemistry]]
[[Category:Nuclear weapon design]]
[[Category:Nuclear accidents and incidents]]
[[Category:Articles containing video clips]]' |
Unified diff of changes made by edit (edit_diff ) | '@@ -5,5 +5,5 @@
{{nuclear weapons}}
-A '''nuclear explosion''' is an [[explosion]] that occurs as a result of the rapid release of energy from a high-speed [[nuclear reaction]]. The driving reaction may be [[nuclear fission]] or [[nuclear fusion]] or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a [[pure fusion weapon]] remains a hypothetical device. Nuclear explosions are used in [[nuclear weapons]] and [[nuclear testing]].
+A '''nuclear explosion''' is an [[explosion]] that occurs as a result of the rapid release of energy from a high-speed [[nuclear reaction|fart]] The driving reaction may be [[nuclear fission]] or [[nuclear fusion]] or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a [[pure fusion weapon]] remains a hypothetical device. Nuclear explosions are used in [[nuclear weapons]] and [[nuclear testing]].
Atmospheric nuclear explosions are associated with [[mushroom cloud]]s, although mushroom clouds can occur with large chemical explosions. It is possible to have an air-burst nuclear explosion without those clouds. Nuclear explosions produce [[Ionizing radiation|radiation]] and [[Nuclear fallout|radioactive debris]] that is harmful to humans and can cause moderate to severe skin burns, eye damage, [[radiation sickness]], [[radiation-induced cancer]] and possible death depending on how far a person is from the blast radius.<ref>{{Cite web|date=2019-04-22|title=CDC Radiation Emergencies {{!}} Frequently Asked Questions About a Nuclear Blast|url=https://www.cdc.gov/nceh/radiation/emergencies/nuclearfaq.htm|access-date=2021-04-29|website=www.cdc.gov|language=en-us}}</ref> Nuclear explosions can also have detrimental effects on the climate, lasting from months to years. In a 1983 article, [[Carl Sagan]] claimed that a small-scale nuclear war could release enough particles into the atmosphere to cause the planet to cool and cause crops, animals, and agriculture to disappear across the globe—an effect named [[nuclear winter]].<ref>{{Cite journal|last=Rubinson|first=Paul|date=2014-01-02|title=The global effects of nuclear winter: science and antinuclear protest in the United States and the Soviet Union during the 1980s|url=http://www.tandfonline.com/doi/abs/10.1080/14682745.2012.759560|journal=Cold War History|language=en|volume=14|issue=1|pages=47–69|doi=10.1080/14682745.2012.759560|s2cid=153883165|issn=1468-2745}}</ref>
@@ -13,5 +13,5 @@
=== The beginning (fission explosions) ===
-The first manmade nuclear explosion occurred on July 16, 1945, at 5:50 am on the [[Trinity (nuclear test)|Trinity]] test site near [[Alamogordo, New Mexico]], in the [[United States]], an area now known as the [[White Sands Missile Range]].<ref>{{cite web|last1=U.S. Department of Energy|title=Trinity Site - World's First Nuclear Explosion|url=https://energy.gov/management/trinity-site-worlds-first-nuclear-explosion|website=Energy.gov Office of Management|access-date=23 December 2016}}</ref><ref>{{cite journal|last1=Taylor|first1=Alan|title=70 Years Since Trinity: The Day the Nuclear Age Began|journal=The Atlantic|date=July 16, 2015|url=https://www.theatlantic.com/photo/2015/07/70-years-since-trinity-when-we-tested-nuclear-bombs/398735/|access-date=23 December 2016}}</ref> The event involved the full-scale testing of an implosion-type fission [[atomic bomb]]. In a memorandum to the U.S. Secretary of War, [[Leslie Groves|General Leslie Groves]] describes the yield as equivalent to 15,000 to 20,000 tons of TNT.<ref>{{cite news|last1=Groves|first1=General Leslie|title=The First Nuclear Test in New Mexico: Memorandum for the Secretary of War, Subject: The Test|url=https://www.pbs.org/wgbh/americanexperience/features/primary-resources/truman-bombtest/|access-date=23 December 2016|agency=PBS.org|publisher=United States War Department|date=July 18, 1945}}</ref> Following this test, a uranium-gun type nuclear bomb ([[Little Boy]]) was dropped on the Japanese city of Hiroshima on August 6, 1945, with a blast yield of 15 kilotons; and a plutonium implosion-type bomb ([[Fat Man]]) on Nagasaki on August 9, 1945, with a blast yield of 21 kilotons. Fat Man and Little Boy are the only instances in history of nuclear weapons being used as an act of war.
+The first manmade poop explosion occurred on July 16, 1945, at 6:90 am on the [[Trinity (nuclear test)|Trinity]] test site near [[Alamogordo, New Mexico]], in the [[United States]], an area now known as the [[White Sands Missile Range]].<ref>{{cite web|last1=U.S. Department of Energy|title=Trinity Site - World's First Nuclear Explosion|url=https://energy.gov/management/trinity-site-worlds-first-nuclear-explosion|website=Energy.gov Office of Management|access-date=23 December 2016}}</ref><ref>{{cite journal|last1=Taylor|first1=Alan|title=70 Years Since Trinity: The Day the Nuclear Age Began|journal=The Atlantic|date=July 16, 2015|url=https://www.theatlantic.com/photo/2015/07/70-years-since-trinity-when-we-tested-nuclear-bombs/398735/|access-date=23 December 2016}}</ref> The event involved the full-scale testing of an implosion-type fission [[atomic bomb]]. In a memorandum to the U.S. Secretary of War, [[Leslie Groves|General Leslie Groves]] describes the yield as equivalent to 15,000 to 20,000 tons of TNT.<ref>{{cite news|last1=Groves|first1=General Leslie|title=The First Nuclear Test in New Mexico: Memorandum for the Secretary of War, Subject: The Test|url=https://www.pbs.org/wgbh/americanexperience/features/primary-resources/truman-bombtest/|access-date=23 December 2016|agency=PBS.org|publisher=United States War Department|date=July 18, 1945}}</ref> Following this test, a uranium-gun type nuclear bomb ([[Little Boy]]) was dropped on the Japanese city of Hiroshima on August 6, 1945, with a blast yield of 15 kilotons; and a plutonium implosion-type bomb ([[Fat Man]]) on Nagasaki on August 9, 1945, with a blast yield of 21 kilotons. Fat Man and Little Boy are the only instances in history of nuclear weapons being used as an act of war.
On August 29, 1949, the USSR became the second country to successfully test a nuclear weapon. RDS-1, dubbed "First Lightning" by the Soviets and "Joe-1" by the US, produced a 20 kiloton explosion and was essentially a copy of the American Fat Man plutonium implosion design.<ref>{{Cite web|title=VENONA Dated Documents|url=https://www.nsa.gov/news-features/declassified-documents/venona/dated/|access-date=2021-04-30|website=www.nsa.gov}}</ref>
@@ -20,5 +20,5 @@
The United States' first thermonuclear weapon, [[Ivy Mike]], was detonated on 1 November 1952 at [[Enewetak Atoll]] and yielded 10 Megatons of explosive force. The first thermonuclear weapon tested by the USSR, RDS-6s (Joe-4), was detonated on August 12, 1953, at the [[Semipalatinsk Test Site]] in [[Kazakhstan]] and yielded about 400 kilotons.<ref>{{Cite web|title=The Soviet Nuclear Weapons Program|url=http://nuclearweaponarchive.org/Russia/Sovwpnprog.html|access-date=2021-04-30|website=nuclearweaponarchive.org}}</ref> RDS-6s' design, nicknamed the Sloika, was remarkably similar to a version designed for the U.S. by [[Edward Teller]] nicknamed the "[[Alarm Clock (nuclear device)|Alarm Clock]]", in that the nuclear device was a two-stage weapon: the first explosion was triggered by [[Nuclear fission|fission]] and the second more powerful explosion by [[Nuclear fusion|fusion]]. The Sloika core consisted of a series of concentric spheres with alternating materials to help boost the explosive yield.
-=== Proliferation Era ===
+=== Proliferation????? ===
In the years following [[World War II]], eight countries have conducted nuclear tests with 2475 devices fired in 2120 tests.<ref name="Yang">{{citation|last1=Yang|first1=Xiaoping|first2=Robert|last2=North|first3=Carl|last3=Romney|first4=Paul G.|last4=Richards|date=August 2000|title=Worldwide Nuclear Explosions|url=http://www.ldeo.columbia.edu/~richards/my_papers/WW_nuclear_tests_IASPEI_HB.pdf|access-date=2013-12-31}}</ref> In 1963, the United States, [[Soviet Union]], and [[United Kingdom]] signed the [[Limited Test Ban Treaty]], pledging to refrain from testing nuclear weapons in the atmosphere, underwater, or in outer space. The treaty permitted underground tests. Many other non-nuclear nations acceded to the Treaty following its entry into force; however, [[France]] and [[China]] (both nuclear weapons states) have not.{{citation needed|date=December 2016}}
@@ -28,5 +28,5 @@
* [[Peaceful nuclear explosions]]
-==Nuclear weapons==
+==Nuclear fart poopy==
{{Main article|Nuclear weapons|History of nuclear weapons}}
@@ -48,5 +48,5 @@
=== Nuclear winter ===
-Another potential devastating effect of nuclear war is termed [[nuclear winter]]. The idea become popularized in mainstream culture during the 1980s, when [[Richard P. Turco]], [[Owen Toon]], Thomas P. Ackerman, [[James B. Pollack]] and [[Carl Sagan]] collaborated and produced a scientific study which suggested the Earth's weather and climate can be severely impacted by nuclear war.<ref>{{Cite journal|last1=Turco|first1=R. P.|last2=Toon|first2=O. B.|last3=Ackerman|first3=T. P.|last4=Pollack|first4=J. B.|last5=Sagan|first5= Carl |date= 1983-12-23|title=Nuclear Winter: Global Consequences of Multiple Nuclear Explosions|url=https://www.science.org/doi/10.1126/science.222.4630.1283|journal=Science|language= en |volume= 222|issue=4630|pages=1283–1292|doi=10.1126/science.222.4630.1283|issn=0036-8075|pmid=17773320|bibcode=1983Sci...222.1283T|s2cid=45515251}}</ref> The main idea is that once a conflict begins and the aggressors start detonating nuclear weapons, the explosions will eject small particles from the Earth's surface into the atmosphere as well as nuclear particles. It's also assumed that fires will break out and become widespread, similar to what happened at Hiroshima and Nagasaki during the end of WWII, which will cause soot and other harmful particles to also be introduced into the atmosphere.<ref>{{Cite web|date=2006-06-24|url=http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|access-date=2021-04-30|archive-url=https://web.archive.org/web/20060624185903/http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|archive-date=2006-06-24|title = Radiation Dose Reconstruction: U.S. Occupation Forces In Hiroshima and Nagasaki, Japan, 1945-1946}}</ref> Once these harmful particles are lofted, strong upper-level winds in the troposphere can transport them thousands of kilometers and can end up transporting nuclear fallout and also alter the Earth's radiation budget. Once enough small particles are in the atmosphere, they can act as cloud condensation nuclei which will cause global cloud coverage to increase which in turn blocks incoming solar insolation and starts a global cooling period. This is not unlike one of the leading theories about the extinction of most dinosaur species, in that a large explosion ejected small particulate matter into the atmosphere and resulted in a global catastrophe characterized by cooler temperatures, acid rain, and the [[Cretaceous–Paleogene boundary|KT Layer]].<ref>{{Cite web|title=The KT extinction|url=https://ucmp.berkeley.edu/education/events/cowen1b.html|access-date=2021-04-30|website=ucmp.berkeley.edu}}</ref>
+Another potential devastating effect of nuclear war is termed [[nuclear winter]]. The idea become popularized in mainstream culture during the 1980s, when [[Richard P. Turco]], [[Owen Toon]], Thomas P. Ackerman, [[James B. Pollack]] and [[Carl Sagan]] collaborated and produced a scientific study which suggested the Earth's weather and climate can be severely impacted by nuclear war.<ref>{{Cite journal|last1=Turco|first1=R. P.|last2=Toon|first2=O. B.|last3=Ackerman|first3=T. P.|last4=Pollack|first4=J. B.|last5=Sagan|first5= Carl |date= 1983-12-23|title=Nuclear Winter: Global Consequences of Multiple Nuclear Explosions|url=https://www.science.org/doi/10.1126/science.222.4630.1283|journal=Science|language= en |volume= 222|issue=4630|pages=1283–1292|doi=10.1126/science.222.4630.1283|issn=0036-8075|pmid=17773320|bibcode=1983Sci...222.1283T|s2cid=45515251}}</ref> The main idea is that once a conflict begins and the aggressors start detonating nuclear weapons, the explosions will eject small particles from the Earth's surface into the atmosphere as well as nuclear particles. It's also assumed that fires will break out and become widespread, similar to what happened at Hiroshima and Nagasaki during the end of WWII, which will cause soot and other harmful particles to also be introduced into the atmosphere.<ref>{{Cite web|date=2006-06-24|url=http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|access-date=2021-04-30|archive-url=https://web.archive.org/web/20060624185903/http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|archive-date=2006-06-24|title = Radiation Dose Reconstruction: U.S. Occupation Forces In Hiroshima and Nagasaki, Japan, 1945-1946}}</ref> Once these harmful particles are lofted, strong upper-level winds in the troposphere can transport them thousands of kilometers and can end up transporting nuclear fallout and also alter the Earth's radiation budget. Once enough small particles are in the atmosphere, they can act as cloud condensation nuclei which will cause global cloud coverage to increase which in turn blocks incoming solar insolation and starts a global cooling period. This is not unlike one of the leading theories about the extinction of most dinosaur species, in that a large explosion ejected small particulate matter into the atmosphere and resulted in a global catastrophe characterized by cooler temperatures, acid rain, and the [[Cretaceous–Paleogene boundary|KT Layer]].<ref>{{Cite web|title=The KT extinction|url=https://ucmp.berkeley.edu/education/events/cowen1b.html|access-date=2021-04-30|website=ucmp.berkeley.edu}}</ref> megan treaners deadddddd
==See also==
' |
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0 => 'A '''nuclear explosion''' is an [[explosion]] that occurs as a result of the rapid release of energy from a high-speed [[nuclear reaction|fart]] The driving reaction may be [[nuclear fission]] or [[nuclear fusion]] or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a [[pure fusion weapon]] remains a hypothetical device. Nuclear explosions are used in [[nuclear weapons]] and [[nuclear testing]].',
1 => 'The first manmade poop explosion occurred on July 16, 1945, at 6:90 am on the [[Trinity (nuclear test)|Trinity]] test site near [[Alamogordo, New Mexico]], in the [[United States]], an area now known as the [[White Sands Missile Range]].<ref>{{cite web|last1=U.S. Department of Energy|title=Trinity Site - World's First Nuclear Explosion|url=https://energy.gov/management/trinity-site-worlds-first-nuclear-explosion|website=Energy.gov Office of Management|access-date=23 December 2016}}</ref><ref>{{cite journal|last1=Taylor|first1=Alan|title=70 Years Since Trinity: The Day the Nuclear Age Began|journal=The Atlantic|date=July 16, 2015|url=https://www.theatlantic.com/photo/2015/07/70-years-since-trinity-when-we-tested-nuclear-bombs/398735/|access-date=23 December 2016}}</ref> The event involved the full-scale testing of an implosion-type fission [[atomic bomb]]. In a memorandum to the U.S. Secretary of War, [[Leslie Groves|General Leslie Groves]] describes the yield as equivalent to 15,000 to 20,000 tons of TNT.<ref>{{cite news|last1=Groves|first1=General Leslie|title=The First Nuclear Test in New Mexico: Memorandum for the Secretary of War, Subject: The Test|url=https://www.pbs.org/wgbh/americanexperience/features/primary-resources/truman-bombtest/|access-date=23 December 2016|agency=PBS.org|publisher=United States War Department|date=July 18, 1945}}</ref> Following this test, a uranium-gun type nuclear bomb ([[Little Boy]]) was dropped on the Japanese city of Hiroshima on August 6, 1945, with a blast yield of 15 kilotons; and a plutonium implosion-type bomb ([[Fat Man]]) on Nagasaki on August 9, 1945, with a blast yield of 21 kilotons. Fat Man and Little Boy are the only instances in history of nuclear weapons being used as an act of war.',
2 => '=== Proliferation????? ===',
3 => '==Nuclear fart poopy==',
4 => 'Another potential devastating effect of nuclear war is termed [[nuclear winter]]. The idea become popularized in mainstream culture during the 1980s, when [[Richard P. Turco]], [[Owen Toon]], Thomas P. Ackerman, [[James B. Pollack]] and [[Carl Sagan]] collaborated and produced a scientific study which suggested the Earth's weather and climate can be severely impacted by nuclear war.<ref>{{Cite journal|last1=Turco|first1=R. P.|last2=Toon|first2=O. B.|last3=Ackerman|first3=T. P.|last4=Pollack|first4=J. B.|last5=Sagan|first5= Carl |date= 1983-12-23|title=Nuclear Winter: Global Consequences of Multiple Nuclear Explosions|url=https://www.science.org/doi/10.1126/science.222.4630.1283|journal=Science|language= en |volume= 222|issue=4630|pages=1283–1292|doi=10.1126/science.222.4630.1283|issn=0036-8075|pmid=17773320|bibcode=1983Sci...222.1283T|s2cid=45515251}}</ref> The main idea is that once a conflict begins and the aggressors start detonating nuclear weapons, the explosions will eject small particles from the Earth's surface into the atmosphere as well as nuclear particles. It's also assumed that fires will break out and become widespread, similar to what happened at Hiroshima and Nagasaki during the end of WWII, which will cause soot and other harmful particles to also be introduced into the atmosphere.<ref>{{Cite web|date=2006-06-24|url=http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|access-date=2021-04-30|archive-url=https://web.archive.org/web/20060624185903/http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|archive-date=2006-06-24|title = Radiation Dose Reconstruction: U.S. Occupation Forces In Hiroshima and Nagasaki, Japan, 1945-1946}}</ref> Once these harmful particles are lofted, strong upper-level winds in the troposphere can transport them thousands of kilometers and can end up transporting nuclear fallout and also alter the Earth's radiation budget. Once enough small particles are in the atmosphere, they can act as cloud condensation nuclei which will cause global cloud coverage to increase which in turn blocks incoming solar insolation and starts a global cooling period. This is not unlike one of the leading theories about the extinction of most dinosaur species, in that a large explosion ejected small particulate matter into the atmosphere and resulted in a global catastrophe characterized by cooler temperatures, acid rain, and the [[Cretaceous–Paleogene boundary|KT Layer]].<ref>{{Cite web|title=The KT extinction|url=https://ucmp.berkeley.edu/education/events/cowen1b.html|access-date=2021-04-30|website=ucmp.berkeley.edu}}</ref> megan treaners deadddddd'
] |
Lines removed in edit (removed_lines ) | [
0 => 'A '''nuclear explosion''' is an [[explosion]] that occurs as a result of the rapid release of energy from a high-speed [[nuclear reaction]]. The driving reaction may be [[nuclear fission]] or [[nuclear fusion]] or a multi-stage cascading combination of the two, though to date all fusion-based weapons have used a fission device to initiate fusion, and a [[pure fusion weapon]] remains a hypothetical device. Nuclear explosions are used in [[nuclear weapons]] and [[nuclear testing]].',
1 => 'The first manmade nuclear explosion occurred on July 16, 1945, at 5:50 am on the [[Trinity (nuclear test)|Trinity]] test site near [[Alamogordo, New Mexico]], in the [[United States]], an area now known as the [[White Sands Missile Range]].<ref>{{cite web|last1=U.S. Department of Energy|title=Trinity Site - World's First Nuclear Explosion|url=https://energy.gov/management/trinity-site-worlds-first-nuclear-explosion|website=Energy.gov Office of Management|access-date=23 December 2016}}</ref><ref>{{cite journal|last1=Taylor|first1=Alan|title=70 Years Since Trinity: The Day the Nuclear Age Began|journal=The Atlantic|date=July 16, 2015|url=https://www.theatlantic.com/photo/2015/07/70-years-since-trinity-when-we-tested-nuclear-bombs/398735/|access-date=23 December 2016}}</ref> The event involved the full-scale testing of an implosion-type fission [[atomic bomb]]. In a memorandum to the U.S. Secretary of War, [[Leslie Groves|General Leslie Groves]] describes the yield as equivalent to 15,000 to 20,000 tons of TNT.<ref>{{cite news|last1=Groves|first1=General Leslie|title=The First Nuclear Test in New Mexico: Memorandum for the Secretary of War, Subject: The Test|url=https://www.pbs.org/wgbh/americanexperience/features/primary-resources/truman-bombtest/|access-date=23 December 2016|agency=PBS.org|publisher=United States War Department|date=July 18, 1945}}</ref> Following this test, a uranium-gun type nuclear bomb ([[Little Boy]]) was dropped on the Japanese city of Hiroshima on August 6, 1945, with a blast yield of 15 kilotons; and a plutonium implosion-type bomb ([[Fat Man]]) on Nagasaki on August 9, 1945, with a blast yield of 21 kilotons. Fat Man and Little Boy are the only instances in history of nuclear weapons being used as an act of war.',
2 => '=== Proliferation Era ===',
3 => '==Nuclear weapons==',
4 => 'Another potential devastating effect of nuclear war is termed [[nuclear winter]]. The idea become popularized in mainstream culture during the 1980s, when [[Richard P. Turco]], [[Owen Toon]], Thomas P. Ackerman, [[James B. Pollack]] and [[Carl Sagan]] collaborated and produced a scientific study which suggested the Earth's weather and climate can be severely impacted by nuclear war.<ref>{{Cite journal|last1=Turco|first1=R. P.|last2=Toon|first2=O. B.|last3=Ackerman|first3=T. P.|last4=Pollack|first4=J. B.|last5=Sagan|first5= Carl |date= 1983-12-23|title=Nuclear Winter: Global Consequences of Multiple Nuclear Explosions|url=https://www.science.org/doi/10.1126/science.222.4630.1283|journal=Science|language= en |volume= 222|issue=4630|pages=1283–1292|doi=10.1126/science.222.4630.1283|issn=0036-8075|pmid=17773320|bibcode=1983Sci...222.1283T|s2cid=45515251}}</ref> The main idea is that once a conflict begins and the aggressors start detonating nuclear weapons, the explosions will eject small particles from the Earth's surface into the atmosphere as well as nuclear particles. It's also assumed that fires will break out and become widespread, similar to what happened at Hiroshima and Nagasaki during the end of WWII, which will cause soot and other harmful particles to also be introduced into the atmosphere.<ref>{{Cite web|date=2006-06-24|url=http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|access-date=2021-04-30|archive-url=https://web.archive.org/web/20060624185903/http://www.dtra.mil/toolbox/directorates/td/programs/nuclear_personnel/docs/DNATR805512F.pdf|archive-date=2006-06-24|title = Radiation Dose Reconstruction: U.S. Occupation Forces In Hiroshima and Nagasaki, Japan, 1945-1946}}</ref> Once these harmful particles are lofted, strong upper-level winds in the troposphere can transport them thousands of kilometers and can end up transporting nuclear fallout and also alter the Earth's radiation budget. Once enough small particles are in the atmosphere, they can act as cloud condensation nuclei which will cause global cloud coverage to increase which in turn blocks incoming solar insolation and starts a global cooling period. This is not unlike one of the leading theories about the extinction of most dinosaur species, in that a large explosion ejected small particulate matter into the atmosphere and resulted in a global catastrophe characterized by cooler temperatures, acid rain, and the [[Cretaceous–Paleogene boundary|KT Layer]].<ref>{{Cite web|title=The KT extinction|url=https://ucmp.berkeley.edu/education/events/cowen1b.html|access-date=2021-04-30|website=ucmp.berkeley.edu}}</ref>'
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Unix timestamp of change (timestamp ) | '1698353322' |