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Atomic Bombs

Atomic bomb is an explosive device in which a large amount of energy is released through nuclear reactions. This makes an atomic bomb, more properly called a nuclear weapon, a much more powerful device than any conventional bomb containing chemical explosives. The first Atomic Bombs were used during World War 2 in 1945 by the US onto 2 Japanese cities.

2,042 Questions

What was Franklin D Roosevelt's response to the atomic bomb?

FDR never saw a working atomic bomb, he died before the first ones were built.

Will people be affected by electromagnetic radiation?

that depends on the wavelength of the radiation. the shorter the wavelength the more damage it can do.

When was the other times the atomic bomb was used?

The atomic bomb has only been used twice, and that was against Japan during World War II. the first bomb was dropped on Hiroshima, killing over 30,000 people, and three days later, another bomb was dropped on Nagasaki, killing about 40,000 people. The Japanese surrendered the day after the 2nd bomb was dropped.

How many people were affected by the dropping of the atomic bomb?

90,000-166,000 people in Hiroshima and 60,000-80,000 in Nagasaki were killed and in 1950 a national census was conducted in Japan, and 284,000 survivors of the A-bombs were identified.

Why did the US atomic bomb program go further than the German atomic bomb program?

Largely because the German scientists on the Nazi project made mistakes that the US, British, and Canadian scientists on the US project did not make. Some of this was likely due to the German system of not challenging authority that did not exist in the US, Great Britain, or Canada. There is also some speculation that Werner Heisenberg (the director of the Nazi project) was more interested in provide work for German scientists that could keep them out of the German military during the war than he was in actually building an atomic bomb, so he may not have double checked things.

Some of the mistakes that the German scientists made were:

  • when the German scientists tested graphite as a possible neutron moderator for use in reactors they found it absorbed too many neutrons to be usable and abandoned it, when the US scientists did the same they realized that the neutrons were being absorbed by boron contaminating the graphite and ordered boron free graphite for use in reactors
  • the German scientists then selected heavy water as the neutron moderator for use in reactors, but there was only one plant in the world at that time capable of making the quantities of heavy water they needed, it was in Norway and the costs of making heavy water was many times that of making the boron free graphite that the US scientists were using
  • the German scientists made an error in the calculation of the critical mass of uranium-235 that suggested that an atomic bomb would weigh about 50 tons, far too heavy for any bomber any country might be able to build before the end of World War 2, the US scientists correctly calculated the critical masses of both uranium-235 and plutonium and were able to build atomic bombs weighing 5 tons using both materials and had the new B-29 that could carry a bomb that heavy (the British already had the Avro Lancaster bomber that could carry a bomb weighing 6 tons, but the US wanted to use their own bomber not a British one)
  • there are indications that the German scientists never discovered plutonium (which has a lower critical mass than uranium-235) which the US scientists did and found to be less expensive to make in large quantities using reactors than uranium-235 is to enrich from natural uranium (this oversight likely happened as Germany did not have large high power cyclotrons like existed at UC Berkeley where US scientists produced the first measurable quantities of plutonium in the world)
  • etc.
These errors lead Albert Speer to have Heisenberg scale back their project, canceling all atomic bomb development and concentrating entirely on basic research on nuclear reactors that might be scaled up after Nazi Germany won the war to build nuclear power plants for generating electricity and probably inexpensive steam heat for nearby homes and businesses.

What did people think happened after the atomic bomb in hiroshima?

The people of Hiroshima likely thought that they had been bombed by the Allies. Remember that by August 1945 most of Japan had been destroyed by Allied bombing. For almost three months the people of Japan had been bombed almost every day.

Although Hiroshima had been spared from these bombings the people there would have just figured that their luck had run out.

What were the issues in the US about atomic bombs?

Wether it was ethical or not to use the atomic bomb on other countries because of the destruction they cause.

Did the atomic bomb change canadian society?

The creation of the atomic bomb changed both Canadian society and global society. With this development, the tension of world affairs was elevated because of the threat of atomic warfare. Canadians contributed to the creation of the bomb by providing supplies (plutonium and uranium) and conducting crucial research. For Canadian society, these developments raised both moral and political questions that centered on the handling of atomic bombs.

Where and when have atomic bombs been dropped?

im guessing around 2030 and in a first world country like England,china,america one of those most likely

Could the atomic bomb exist without radioactivity?

No, the atomic bomb relies on the process of nuclear fission, which produces radioactivity as a byproduct. Radioactivity is essential for the explosive power of the bomb.

How many atomic bombs did the allies use to win World War 2?

2 Atomic bombs.

Answer:

Technically, the allies, specifically the US used three atomic bombs to motivate the Japanese to surrender: Fat Man, Little Boy, and the first bomb detonated, the Trinity Device.

Which country was the atomic bomb develop?

It is USA.
If you have any disbelief, visit Hiroshima and its unique Gembaku (Atomic Bomb) musium beside the Gembaku Dome.
All the history is there.

Did Einstein make any inventions beside the atomic bomb?

Einstein's only involvement with the atomic bomb was to sign a letter written by Leo Szilard (the inventor of the atomic bomb, but Einstein didn't know this because the patent was classified and thus could not be discussed) that was addressed to FDR warning that the Nazis might be working on them. The US military considered Einstein an enemy alien, so he could not have been granted a clearance to work on the project. Also Einstein was a complete pacifist and refused to do any war related work of any kind.

One thing that Einstein did invent was a refrigeration system with no moving parts, so it did not require any seals to prevent leaks. He did this because all the refrigerants available at the time were highly toxic and/or flammable making leaks very dangerous. However it saw little use at the time because not long after that freon was invented which was nontoxic and nonflammable. However his invention was used in the cooling systems of several nuclear reactor designs beginning in the 1950s.

How is the atomic bomb connected to Einstein?


Albert Einstein was a physicist who developed some of the early theories of nuclear reaction. Even though he would not work on the design of the atomic bombs, the scientist used his knowledge to develope it.


One of his most famous equations was a simple one:


E = m X C^2


where 'E' is energy and 'm' is mass of a particle and 'c' is the speed of light.


This equation stated that a particle could be converted into pure energy. The amount of energy that would be produced is the Square(^2) of the Speed of Light(c). This is a tremendous amount of energy. Once this equation was identified in the lab, then the scientists had to find a practical way of creating this nuclear reaction on a large scale.

What was it like to die from the atomic bomb?

Most people would have been unaware that were near the centre, as they would be vapourised instantly. However, people at greater distance suffered severe burns and people that were exposed to radioactive fallout died long and painful deaths.

Did Roosevelt die before the atomic bombs were dropped on Japan?

No he did not Oh yes he did ! The fact was that Truman was President, because Roosevelt had died earlier in the year, April I believe, of 1945.

How Japanese citizens killed by the atomic bomb?

Estimates show that about 140,000 were killed in Hiroshima and 80,000 in Nagasaki.

Did the first atomic bomb dropping or Charles Lindbergh's famous flight occur first?

Charles Lindbergh's flight across the Atlantic ocean occured in 1927; the first atomic bomb dropped in 1945.

Therefore, Charles Lindbergh's famous flight occured first.

What did Pearl Harbar have do with the atomic bombing?

Second World war started in the European side until the Japanese decided to bomb Pearl Harbor, Hawaii in December 1941. In 1945 the bombs were dropped to finally end that war.