Atomic bomb | History, Properties, Proliferation, & Facts
网页2024年8月25日 · atomic bomb, weapon with great explosive power that results from the sudden release of energy upon the splitting, or fission, of the nuclei of a heavy element such as plutonium or uranium.
atomic bombings of Hiroshima and Nagasaki - Encyclopedia Britannica
网页2024年8月25日 · Atomic bombings of Hiroshima and Nagasaki, during World War II, American bombing raids on the Japanese cities of Hiroshima (August 6, 1945) and Nagasaki (August 9, 1945) that marked the first use of atomic weapons in war. Tens of thousands were killed in the blasts and thousands more would die of radiation poisoning.
Atomic Bomb: Nuclear Bomb, Hiroshima & Nagasaki ‑ HISTORY
网页2017年9月6日 · The atomic bomb and nuclear bombs are powerful weapons that use nuclear reactions as their source of explosive energy. Scientists first developed nuclear weapons technology during World...
Atomic bombings of Hiroshima and Nagasaki - Wikipedia
网页On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki, respectively. The bombings killed between 150,000 and 246,000 people, most of whom were civilians, and remain the only use of nuclear weapons in an armed conflict.
Nuclear weapon | History, Facts, Types, Countries, Blast Radius ...
网页5 天之前 · A nuclear weapon is a device designed to release energy in an explosive manner as a result of nuclear fission, nuclear fusion, or a combination of the two. Fission weapons are commonly referred to as atomic bombs, and fusion weapons are referred to as thermonuclear bombs or, more commonly, hydrogen bombs.
Bombing of Hiroshima and Nagasaki - HISTORY
网页2009年11月18日 · On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world’s first deployed atomic bomb over the Japanese city of Hiroshima. The explosion...
How the advent of nuclear weapons changed the course of history
网页2020年7月15日 · In the 75 years since the first successful test of a plutonium bomb, nuclear weapons have changed the face of warfare. Here, troops in the 11th Airborne division watch an atomic explosion at...
The Atomic Bombing of Hiroshima and Nagasaki, August 1945
网页2021年6月7日 · The United States bombings of the Japanese cities of Hiroshima and Nagasaki on August 6 and August 9, 1945, were the first instances of atomic bombs used against humans, killing tens of thousands of people, obliterating the cities, and contributing to the end of World War II.
The Most Fearsome Sight: The Atomic Bombing of Hiroshima
网页At 2:45 a.m. on Monday August 6, 1945, three American B-29 bombers of the 509th Composite Group took off from an airfield on the Pacific island of Tinian, 1,500 miles south of Japan. Colonel Paul Tibbets piloted the lead bomber, “Enola Gay,” which carried a nuclear bomb nicknamed “Little Boy.”
Bombings of Hiroshima and Nagasaki - 1945 - Nuclear Museum
网页On August 6, 1945, the United States dropped an atomic bomb on the city of Hiroshima. The bomb was known as “Little Boy”, a uranium gun-type bomb that exploded with about thirteen kilotons of force. At the time of the bombing, Hiroshima was home to 280,000-290,000 civilians as well as 43,000 soldiers.
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