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  • On July 16th, 1945 the first ever nuclear weapon was detonated in a New Mexico desert.

  • At the time, the Trinity test was one of the largest manmade explosions ever. Nuclear blasts

  • are measured in TNT, and this one yielded about 20 thousand tons of TNT. That size blast

  • would cover an estimated area of about five square miles in radioactivity. But in the

  • 70 years since, nearly 2,000 nuclear tests have been performed, and about 125,000 nuclear

  • bombs have been built. So we wanted to know, how powerful are modern nuclear weapons?

  • Well, most people think of the nuclear bombings of Hiroshima and Nagasaki during World War

  • Two as extraordinarily powerful explosions. Combined, they yielded about 36 thousands

  • tons of TNT. But 16 years later, the Tsar Bomba was built, designed to be about 3,000

  • times more powerful. It was originally supposed to deliver a yield of 100 million tons, which

  • would destroy an area the size of Connecticut. The weapon was built by the Soviet Union as

  • a display of power against the United States, and was tested with a yield of fifty million

  • tons of TNT. That test is, to this day, the most powerful man made explosion in history.

  • But that was more than 50 years ago. So did the US one-up the Soviet Union and build their

  • own 200 megaton bomb? In fact, they did the opposite. During the Cold War, the actual

  • point of building more nuclear weapons was mutually assured destruction. If the Soviets

  • nuke the US, they might as well be nuking themselves. For this system to work, the US

  • determined that they’d need the equivalent of 400 million tons of TNT in their nuclear

  • arsenal. Instead of building one giant bomb, they diversified into thousands of relatively

  • lower yield weapons. Additionally, new rockets calledMIRVswere developed to carry

  • multiple nuclear warheads, thereby upping the maximum yield.

  • By the end of the Cold War, the US was estimated to hold about 3.8 billion tons worth of nuclear

  • weapon yield. But in the years following, the US and Russia signed a series of nuclear

  • disarmament treaties, promising to limit their stockpile to about 2,000 deployed weapons

  • each.

  • Today, nine countries are believed to have nuclear weapons. The US and Russia hold about

  • fifteen thousand nukes, with the other seven countries holding between 8 and 300 nukes

  • each. The most powerful thermonuclear weapon currently in the US’s arsenal yields 1.2

  • million tons, equal to about 200 square miles of devastation. Meanwhile, China is believed

  • to have a 5 million ton yield weapon within their active arsenal. And although Russia

  • was once the world leader in giant nuclear bombs, in recent years, theyve retired

  • their largest, 20 million ton bombs. Similarly, the US dismantled their nine million ton B53

  • bomb in 2011.

  • From the start of the nuclear arms race to today, weapon yields have varied dramatically.

  • In the late 1950s, and tactical nuclear gun was even developed, which fired the smallest

  • nuclear bomb ever, called the Davy Crockett. It was 2 and a half million times smaller

  • than the yield of the Tsar Bomba. Clearly, nowadays it doesn’t really matter how big

  • your nuclear weapons are. Every single one is capable of unmitigated devastation.

  • So now we know the true force of nuclear weapons today. But which countries actually have them?

  • Find out in the video up above. You can also check out my own reporting on fallout from

  • Fukushima in the box below. Thanks for watching TestTube News! Be sure to like and subscribe

  • for new videos. Have a great one.

On July 16th, 1945 the first ever nuclear weapon was detonated in a New Mexico desert.

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現代核武器的威力有多大? (How Powerful Are Modern Nuclear Weapons?)

  • 91 12
    richardwang 發佈於 2021 年 01 月 14 日
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