What were the atomic bombs filled with in world war 2?

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"Little Boy" was the bomb dropped first, on Hiroshima. It was a Uranium bomb, the nuclear material being Uranium-235. The bomb was not "filled" with it - there was only about 140 pounds of U-235. There was a big mechanism inside the 10 foot long bomb. A sphere of the U-235 was fired down a "gun barrel" into the rest of the U-235 inside the bomb by conventional explosives. When the sphere impacted into the rest of the U-235 this compressed the U-235 and critical mass was achieved, initiating the nuclear explosion. The design was not very efficient. Of the 140 pounds of U-235 only about a pound and a half underwent fission, and the explosion was the result of the release of energy from .6 grams, or less than .02 ounces.

"Fat Man" was dropped three days later on Nagasaki. It was a Plutonium bomb, the nuclear material being Plutonium-239. It was exploded the way nuclear devices still are - it was an implosion bomb. An absolutely perfect sphere of sub-critical plutonium was placed inside a hollow sphere of high explosives. The high explosives were detonated exactly simultaneously, compressing the sphere of plutonium which brought it to critical mass, initiating the explosion. Again, the design was not terribly efficient. There were thirteen pounds of Plutonium in the bomb, less than three pounds fissioned, and the energy of less than one gram was released, causing the explosion.
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How did the atomic bomb end World War 2?

Answer . \nJapan was prepared to fight to the last man, woman and child. Only something utterly dramatic would have detered them.\n. \nThe last battle, Okinawa (sp) resulted in the highest casualties to the US Navy in all battles up to that time.\n. \nThe USN had 30 ships sunk! It had 300 ships ( Full Answer )

Why did America use the atomic bomb in World War 2?

Answer . Because Japan had attacked U.S. territory, destroyed U.S. Navy ships, killed U.S. military personnel, attempted to take over all of the Pacific Islands, and when the Japanese military was obviously loosing the war they refused to surrender. They wanted to keep their military together so ( Full Answer )

What was used to make the atomic bomb in World War 2?

The US built a weapon and fired it as a test shot to prove the technology. Then the two bombs that were dropped on Japan were built and deployed. As regards the fissile material in the weapons, the Trinity test shot used plutonium , as did the second bomb dropped on Japan, the "Fat Man" weapon depl ( Full Answer )

What did the atomic bomb do in World War 2?

rachid's Answer . While Allied military leaders planned for invasion, scientists offered another way to end the war. Since the early 1900s, scientists had understood that matter, made up of atoms, could be converted into pure energy. In military terms, this meant that, by splitting the atom, scie ( Full Answer )

When were the atomic bombs dropped in World War 2?

Little Boy was dropped in Hiroshimo August 6, 1945. and Fat man was dropped in Nagaski on August 9, 1945. The first atomic bomb was dropped on August 6, 1945 on Hiroshima, Japan, and the second was dropped on August 9, 1945 on Nagasaki, Japan. During the month of August, 1945. This forced a surren ( Full Answer )

What elements were in the atomic bomb in world war 2?

As the physics of nuclear explosives has not changed, pretty muchthe same elements as are used now. The main changes are not theelements, but the compounds that contain them (e.g. the chemicalexplosives have been replaced with safer ones, but both the old andnew chemical explosives contain the same ( Full Answer )

Who used atomic bombs in World War 2?

Only the US, as they were the only country with them. America used two Atomic Bombs in WWII. They used this to end the war with Japan. This was a successful technique because the war ended shortly there after. Some people say America shouldn't have done this but Japan attacked America without warnin ( Full Answer )

Why Did The USA Use The Atom Bomb in World War 2?

To end WWII. President Truman was told that if the U.S. invaded Japan, the number of American casualties could exceed a million. The Russians were preparing to invade Japan and Truman did not want what was happening in Eastern Europe to happen in Japan. Therefore, it felt it would be best to end ( Full Answer )

Atomic bombs specifications world war 2?

Litte boy Place of origin United States Specifications Weight 9,700 pounds (4,400 kg) Length 120 inches (3.0 m)[1] Diameter 28 inches (710 mm) Blast yield 13-18 kt (54-75 TJ) Fat man Type Nuclear weapon Place of origin United States Specifications Weight 10,213 pounds (4,633 ( Full Answer )

How many died in atomic bombing in World War 2?

On August 6 and 9, 1945, the cities of Hiroshima and Nagasaki were destroyed by the first atomic bombs used in warfare. The first atomic bomb ever to be used in a military operation was dropped on the city of Hiroshima, Japan On August 6, 1945 at 8:16:02 a.m. Hiroshima time. The bomb, affectionately ( Full Answer )

Did the atomic bombing of Nagasaki end World War 2?

Russia was on Japan's back door when the two bombs were dropped on Japan. The Emperor realized his nation had been defeated once he saw the power of the atom bomb and saw that Russia could invade his nation soon. He surrendered to the Allies once he realized his nation could not win the war.

Atomic bombing of World War 2?

There were two and they were dropped over Hiroshima and Nagasaki named little boy and fat man.

Why was the atomic bomb significant in world war 2?

It devastated two of Japan's major cities, Hiroshima and Nagasaki, and showed the Japanese that the U.S. were prepared to stop the war by any means. Emperor Hirohito, knowing that he could not win against such technological superiority, agreed to the terms of surrender, effectively ending the second ( Full Answer )

How was the atomic bomb created in world war 2?

On August 2, 1939, just before the beginning of World War II, Albert Einstein wrote to then President Franklin D. Roosevelt. Einstein and several other scientists told Roosevelt of efforts in Nazi Germany to purify uranium-235, which could be used to build an atomic bomb. It was shortly thereafter t ( Full Answer )

How many atomic bombs were made for World War 2?

Four were completed prior to Japan's surrender: . MK-III, Gadget; tested at Trinity site in NM . MK-I, Little Boy; dropped by the B-29 Enola Gay on Hiroshima . MK-III, Fat Man; dropped by the B-29 Bockscar on Nagasaki . MK-III, unnamed; arrived in San Francisco on August 18, returned to Los Al ( Full Answer )

Dropping of atomic bomb in World War 2?

During WWII, there was a secret project called the Manhattan Project whose goal was to develop an atomic bomb. The only person who knew about the existence of these atomic bombs were President Roosevelt (who hadn't even told VP Harry Truman about them). When Rooselvelt suffered a stroke and died on ( Full Answer )

What was the atomic bombs of World War 2?

Those were the only atomic bombs used against mankind. The one named Little boy was dropped over Hiroshima on august 6 1945. The one name Fat man was dropped over Nagasaki on august 9 1945. With those events, the war ended.

What was the atomic bomb during world war 2?

The Atomic bomb is another military explosive weapon. Instead of using a chemical explosive, it used the decomposition energy of an atom as the explosive force. This creates blast energy, light and heat, and a sleet of sub-atomic particles. The power of atomic bombs is measured as the equivalent ( Full Answer )

How did the atom bomb change in World War 2?

It helped us win the war over Japan. After the first atomic bomb was dropped over Hiroshima, the Japanese still refused to surrender. A few days later, the second bomb was dropped on Nagasaki and Japan finally signed their unconditional surrender on August 11, 1945. This day is commonly known as V-J ( Full Answer )

Why were atomic bombs significant during world war 2?

Because at the time only US had them & were prepared to drop 50 more if needed. 1 of those was equivalent to a full week of bombing runs. The Emperor was not about to let his country be completely destroyed. Tokyo was only saved because rain was predicted that day. The US wanted to force a surrender ( Full Answer )

How were the atomic bomb used in world war 2?

When the Japenese attacked Pearl Harbor, the US sent troops to Japan. When the allies defeated Germany and Italy they turned to the east where the war was to be finished. The president (Roosevelt) decided to drop two bombs on Japan. The US dropped one on Hiroshima and Natsaki. Then Japan surrender ( Full Answer )

Was the atomic bomb helpful in World War 2?

The atomic bomb was very helpful in ww2 because it killed thousands in Japan. And it weakened the allies of Hitler. But before that America didn't want to be part of ww2. Unfortunately, America got interfered because the Japanese bombed pearl harbor. And that made Americans mad. When they bombed P ( Full Answer )

When did atomic bombing of world war 2 take place?

August 6 in 1940 was the day Hiroshima, Japan was bombed. On August 9 they bombed Nagasaki since the Japanese refused to surrender. After that Emperor Hirohito decided to surrender. Good answer, except for the year quoted!

Was the atomic bomb ever used after world war 2?

There have not been any attacks using atomic bombs or missiles since World War II (as of today, May 4th, 2011). There have however, been many nuclear weapons tests - where controlled explosions have been conducted. Most of these have occurred underground to reduce nuclear fallout.

What was the aftermath of the World War 2 atomic bombing?

The moral aspect of the attacks upon Hiroshima and Nagasaki continues to divide historians. While some argue that the terrible long term human cost to the Japanese population can never justify the use of such weapons, others maintain that in the context of total war, it would have been immoral if at ( Full Answer )

How did atomic bombs affect the end of World War 2?

The atomic bombs dropped in hiroshima and nagasaki forced the japanese to surrender in fear of other bombings. They were a sad necessity during the war because if it hadnt been for the those bombs, the allied invasion of japan, codenamed operation downfall, would have had way more casualties and wou ( Full Answer )

Where was the second atomic bomb dropped after World War 2?

No atomic bombs were dropped after the war ! The two 'test' bombs were dropped on Hiroshima and Nagasaki before the second world war ended. It was the result of the devastation the bombs caused that brought the war to an end.

Is there any atomic bombs that where preserved from world war 2?

There are atomic bomb casings that remain from the1945 to 1948 period, but most (if not all) were probably builtpostwar. There were only four functional atomicbombs actually built prior to the end of the war and threeof those were detonated ( gadget , little boy , fatman ), leaving only one (un ( Full Answer )