https://en.wikipedia.org/wiki/Nuclear_weapon
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions (thermonuclear bomb), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter.

https://www.britannica.com/technology/nuclear-weapon
Nuclear weapons produce enormous explosive energy. Their significance may best be appreciated by the coining of the words kiloton (1,000 tons) and megaton (1,000,000 tons) to describe their blast energy in equivalent weights of the conventional chemical explosive TNT.For example, the atomic bomb dropped on Hiroshima, Japan, in 1945, containing only about 64 kg (140 pounds) of highly enriched

https://www.history.com/topics/world-war-ii/atomic-bomb-history
Learn about the development, use and impact of nuclear weapons in World War II and the Cold War. Explore the science, politics and consequences of the atomic bomb and hydrogen bomb.

https://www.britannica.com/technology/atomic-bomb
Atomic bombing of Hiroshima. A gigantic mushroom cloud rising above Hiroshima, Japan, on August 6, 1945, after a U.S. aircraft dropped an atomic bomb on the city, immediately killing more than 70,000 people. (more) Fission releases an enormous amount of energy relative to the material involved.

https://en.wikipedia.org/wiki/History_of_nuclear_weapons
Ukraine. v. t. e. Building on major scientific breakthroughs made during the 1930s, the United Kingdom began the world's first nuclear weapons research project, codenamed Tube Alloys, in 1941, during World War II. The United States, in collaboration with the United Kingdom, initiated the Manhattan Project the following year to build a weapon

https://ourworldindata.org/nuclear-weapons
Learn about the number, power, and history of nuclear weapons in the world. See data and charts on the nine nuclear powers, the number of warheads, the risks of nuclear war, and the efforts to limit or abolish them.

https://www.scientificamerican.com/article/how-many-nuclear-weapons-exist-and-who-has-them/
Nuclear weapons analysts estimate that the world's nine nuclear states—China, France, India, Israel, North Korea, Pakistan, Russia, the United Kingdom and the United States—have around

https://www.britannica.com/technology/nuclear-weapon/The-effects-of-nuclear-weapons
Nuclear weapon - Radiation, Fallout, Destruction: Nuclear weapons are fundamentally different from conventional weapons because of the vast amounts of explosive energy they can release and the kinds of effects they produce, such as high temperatures and radiation. The prompt effects of a nuclear explosion and fallout are well known through data gathered from the attacks on Hiroshima and

https://www.nationalgeographic.com/history/article/how-advent-nuclear-weapons-changed-history
Learn how the U.S. developed and used nuclear bombs in World War II, sparking the Cold War and the nuclear arms race. Explore the impact of nuclear weapons on science, geopolitics, and the environment.

https://www.bbc.com/news/newsbeat-51091897
And the bomb dropped on Nagasaki killed more than 70,000 people. They haven't been detonated in war since then. Nine countries currently have nuclear weapons: the US, UK, Russia, France, China

https://www.brookings.edu/articles/50-facts-about-u-s-nuclear-weapons-today/
Learn about the number, type, yield and role of U.S. nuclear weapons today, as well as the history and policy of their use and control. This web page provides 50 facts and figures on U.S. nuclear arsenal, from the first test to the New START treaty.

https://science.howstuffworks.com/nuclear-bomb.htm
Learn about the history, science and consequences of nuclear bombs, from fission to fusion, from Hiroshima to North Korea. Find out how atoms, isotopes, radioactivity and triggers are involved in nuclear weapons.

https://en.wikipedia.org/wiki/Atomic_bombings_of_Hiroshima_and_Nagasaki
On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki. The bombings killed between 129,000 and 226,000 people, most of whom were civilians, and remain the only use of nuclear weapons in an armed conflict. Japan surrendered to the Allies on 15 August, six days after the bombing of

https://www.livescience.com/what-happens-in-nuclear-bomb-blast
For instance, a 10-kiloton nuclear weapon, equivalent to the size of the Hiroshima and Nagasaki bombs, would immediately kill about 50%t of the people within a 2-mile (3.2 km) radius of ground

https://www.britannica.com/event/Manhattan-Project
Manhattan Project, U.S. government research project (1942-45) that produced the first atomic bombs. The project's name was derived from its initial location at Columbia University, where much of the early research was done. The first bomb was exploded in a test at Alamogordo air base in southern New Mexico on July 16, 1945.

https://www.youtube.com/watch?v=Qrze43Uchm8
See how America developed the most destructive invention in human history - the nuclear bomb - how it changed the world and how it continues to loom large in

https://www.newsweek.com/nuclear-bomb-blast-map-shows-what-would-happen-one-detonated-near-you-nukemap-1706923
Alex Wellerstein, a historian of nuclear weapons, who is an associate professor at the Stevens Institute of Technology, in Hoboken, New Jersey, created a nuclear bomb simulator to show just that.

https://en.wikipedia.org/wiki/Nuclear_weapons_of_the_United_States
The United States was the first country to manufacture nuclear weapons and is the only country to have used them in combat, with the bombings of Hiroshima and Nagasaki in World War II.Before and during the Cold War, it conducted 1,054 nuclear tests, and tested many long-range nuclear weapons delivery systems.. Between 1940 and 1996, the U.S. federal government spent at least US$11.3 trillion

https://thereader.mitpress.mit.edu/devastating-effects-of-nuclear-weapons-war/
Learn how nuclear weapons work, what they can do, and what a nuclear war would look like. Explore the short-term and long-term consequences of radiation, blast, fire, and fallout on humans and the environment.

https://www.britannica.com/summary/nuclear-weapon
Learn about the history, types, effects, and control of nuclear weapons, also known as atomic or thermonuclear bombs. Find out which countries have nuclear arsenals and how they are reducing them.

https://nuclearsecrecy.com/nukemap/
Collapse options on "detonate". 4. Clickthe "Detonate" button below. Detonate. Clear all effectsAdd new detonation. Center ground zeroInspect location. Notethat you can drag the target marker after you have detonated the nuke. Created by Alex Wellerstein, 2012-2024.

https://en.wikipedia.org/wiki/List_of_nuclear_weapons
American nuclear weapons of all types - bombs, warheads, shells, and others - are numbered in the same sequence starting with the Mark 1 and (as of March 2006) ending with the W91 (which was cancelled prior to introduction into service). All designs which were formally intended to be weapons at some point received a number designation.

https://thebulletin.org/2021/11/the-untold-story-of-the-worlds-biggest-nuclear-bomb/
Learn about the history and impact of the 50-megaton Tsar Bomba, the most powerful nuclear weapon ever tested. Explore how it was created, why it was detonated, and what it reveals about the dangers of nuclear arms competition.