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 world war.
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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… put out of commission for 30 days or more at that battle. This was out of about 1400 ships in the invasion force.\n. \nWorse, at the end of October 1945 one of the worst typhoons hit Japan and the surrounding areas. It did extensive damage to our facilities that had prepared fot the invasion of Japan on Okinawa. Had be been prepared for the invasions, we would have suffered a major defeat and losses from this storm. The invasion of the 1st island of Japan scheduled for the 1st of November would have had to have been postponed. The "devine wind" would have saved them again from invasion and only emboldened them to fight on.\n. \nOn the night of March 9-10 1945, 485 B29's burned out 16 square miles of Tokyo and killed about 100,000 people. There is a book called "Flames over Tokyo" that describes the situation on the ground for the inhabitants of Tokyo...\n. \nThey did the math: 485 to destroy Tokyo, 1 each to destroy Hiroshima amd Nagaski. The Japanese knew that we had about 2,000 B29s in the Marianas. It forced the Japanese to surrender without the invasion of the mainland (MORE)
The atomic bomb was dropped on Hiroshima, Japan on August 6, 1945 and on Nagasaki, Japan three days later on August 9, 1945. These bombings effectively brought an end to World War II.
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… that they could make another run on the Pacific, and they wanted the Emperor of Japan to remain in power. After the Japanese military had been driven back to Japan and Japan was completely surrounded, the Japanese people were starving and lacking in many basic necessities, but the Emperor refused to surrender and believed that further military action would result in a better outcome for Japan. They were continuing to fight in hopes of better "terms", but the U.S. and other Allies demanded that Japan surrender unconditionally after their agression in the Pacific.\n. \nIt was estimated that 750,000 U.S. and other Allied military personnel would die if Japan was invaded. And that was before more of the Japanese military was moved to the proposed landing area. Conventional bombing of Japan caused incredible fires and loss of life. The atomic bombs used on Japan were the only way to quickly end the war and save lives of Allied personnel.\n. \nIt was understood that if the public ever found out that the U.S. had such a weapon and didn't use it and subsequently 750,000 to perhaps over 1,000,000 U.S. soldiers died, the U.S. population would be outraged, and justifiably so. People today often think that they can see a better outcome to the war with Japan. Unfortunately there were no good options, just options that weren't as bad as others. It was a terrible time and the U.S. and the other Allies just wanted it to end so that life could get back to normal... whatever that is. (MORE)
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…oyed over Nagasaki. The "Little Boy" deployed over Hiroshima, the first use of a nuclear weapon other than the test, used uranium as the fissile material. Links are provided below for fact checking and further investigation. (MORE)
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…ntists could create an explosion far more powerful than any yet known. During the war, Allied scientists, some of them German and Italian refugees, raced to harness the atom. In July 1945, they successfully tested the first atomic bomb at Alamogordo, New Mexico. News of this test was brought to the new American President, Harry Truman. Truman realized that the atomic bomb was a terrible new force for destruction. Still, after consulting with his advisers, he decides to use the new weapon against Japan. Truman warned the Japanese that if they did not surrender, they would face "a rain of ruin from the air the like of which has nerver been seen on this Earth." When the Japanese ignored the deadline, the United States took action. On August 6, 1945 an American plane dropped an atomic bomb, "little boy", on Hiroshima and killed between 80-100 thousand people. Japan still refuses to surrender, so 3 days later, August 9, another American plane dropped "Fat Man" on Nagasaki that killed between 60-75 thousand people. Then on August 14, 1945 Japan surrenders. yes, it was during that war that the two nuclear bombs were dropped over Japan. . yes! . (MORE)
well one of the main significances was that we were considered one of the main military protecterets of the world becides russia we were considered vey strong. Also all of a sudden rusia found out we had atomic bombs then they started to learn how to make them to.
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…der by Japan, to end the second world war. August 6 and 9 1945. (MORE)
Technically, everything explosive is an atomic bomb, you are referring to NUCLEAR bombs, which were used on the Japanese
For "Little Boy", we used uranium. For "Fat Man", we used plutoium. They also used other types of metals.
August 6 and August 9 , 1945 on August 6, 1945 the first bomb was dropped over Hiroshima and the second was dropped on August 9, 1945 over Nagasaki.
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 …elements just in differentarrangements. Polonium is an element used in the neutron sources of all 4 atomicbombs built during world war 2 (Gadget, Little Boy, Fat Man, and anunnamed bomb that was never used) that is no longer used in modernnuclear explosives. Polonium based neutron sources have a shelflife of roughly 180 days due to radioactive decay. These werereplaced by electrically activated tritium fusion based neutronsources sometime in the middle 1950s which have a shelf life ofroughly 12 years due to radioactive decay. Lithium is an element used in some modern nuclear explosives thatwas not used in world war 2, it is converted to tritium in thosebombs for use as fusion fuel. The first use of lithium in a nuclearexplosive was in 1953 by the USSR. It is important to realize that many many elements other than thenuclear fuels must be used in a nuclear explosive to make it work. (MORE)
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…g so America kicked some ass. (MORE)
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 …the war as quickly as possible. See Sources and related links for additional information including theories of the Revisionists. (MORE)
No, it was only one of the new weapons, that just might be a highly useful tool,
Litte boy Place of origin United States Specifications Weight 9,700 pounds (4,400 kg) Length 120 inches (3.0 m) 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 …kg) Length 10.7 feet (3.3 m) Diameter 5 feet (1.5 m) Blast yield 21 kt (88 TJ) ~75 Million sticks of dynamite. (MORE)
Yes. Nuclear energy and the potential for nuclear war (which caused the COLD WAR) still affect us today.
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… named "Little Boy," exploded 1,900 feet above the courtyard of Shima Hospital, with a force equivalent to 12,500 tons of TNT. By the end of 1945, 140,000 people had died as a direct result of the bombing. Within the following five years, another 60,000 would die of bomb-related causes. - The bomb killed men, women, and children indiscriminately. It killed both military personnel and civilians. Although the city produced military items and housed soldiers, it was not selected as a "purely military target" as President Truman had promised. There were six civilians in Hiroshima to every soldier. - The second bomb, called "Fat Man," exploded over Nagasaki, Japan, at 11:02 a.m. on August 9, 1945. It exploded at 1,650 feet with a force of 22,000 tons of TNT. 70,000 people lost their lives in Nagasaki by the end of 1945 due to the bombing. A total of 140,00 died within two weeks. (MORE)
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.
They dropped the atomic bomb in WWII, because America wanted to defeat Japan. Japan surrendered, leaving the Americans victorious
There were two and they were dropped over Hiroshima and Nagasaki named little boy and fat man.
The first atomic bomb was dropped on Hiroshima, Japan, on August 6, 1945, and the second atomic bomb was dropped on Nagasaki, Japan, on August 9, 1945.
"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 barr…el" 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. (MORE)
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…hat the United States Government began the serious undertaking known then only as "The Manhattan Project." Simply put, the Manhattan Project was committed to expediting research that would produce a viable atomic bomb. Making Enriched Uranium The most complicated issue to be addressed in making of an atomic bomb was the production of ample amounts of "enriched" uranium to sustain a chain reaction. At the time, uranium-235 was very hard to extract. In fact, the ratio of conversion from uranium ore to uranium metal is 500:1. Compounding this, the one part of uranium that is finally refined from the ore is over 99% uranium-238, which is practically useless for an atomic bomb. To make the task even more difficult, the useful U-235 and nearly useless U-238 are isotopes, nearly identical in their chemical makeup. No ordinary chemical extraction method could separate them; only mechanical methods could work. A massive enrichment laboratory/plant was constructed at Oak Ridge, Tennessee. Harold Urey and his colleagues at Columbia University devised an extraction system that worked on the principle of gaseous diffusion, and Ernest Lawrence (inventor of the Cyclotron) at the University of California in Berkeley implemented a process involving magnetic separation of the two isotopes. Next, a gas centrifuge was used to further separate the lighter U-235 from the heavier, non-fissionable U-238. Once all of these procedures had been completed, all that needed to be done was to put to the test the entire concept behind atomic fission ("splitting the atom," in layman's terms). Robert Oppenheimer - Manhattan Project Over the course of six years, from 1939 to 1945, more than $2 billion was spent during the history of the Manhattan Project. The formulas for refining uranium and putting together a working atomic bomb were created and seen to their logical ends by some of the greatest minds of our time. Chief among the people who unleashed the power of the atom was Robert Oppenheimer, who oversaw the project from conception to completion. Testing The Gadget aka Atomic Bomb Finally, the day came when all at Los Alamos would find out if "The Gadget" (code-named as such during its development) was going to be the colossal dud of the century or perhaps an end to the war. It all came down to a fateful morning in midsummer, 1945. At 5:29:45 (Mountain War Time) on July 16, 1945, in a white blaze that stretched from the basin of the Jemez Mountains in northern New Mexico to the still-dark skies, "The Gadget" ushered in the Atomic Age. The light of the explosion then turned orange as the atomic fireball began shooting upwards at 360 feet per second, reddening and pulsing as it cooled. The characteristic mushroom cloud of radioactive vapor materialized at 30,000 feet. Beneath the cloud, all that remained of the soil at the blast site were fragments of jade green radioactive glass created by the heat of the reaction. The brilliant light from the detonation pierced the early morning skies with such intensity that residents from a faraway neighboring community would swear that the sun came up twice that day. Even more astonishing is that a blind girl saw the flash 120 miles away. Upon witnessing the explosion, its creators had mixed reactions. Isidor Rabi felt that the equilibrium in nature had been upset as if humankind had become a threat to the world it inhabited. Robert Oppenheimer, though ecstatic about the success of the project, quoted a remembered fragment from the Bhagavad Gita. "I am become Death," he said, "the destroyer of worlds." Ken Bainbridge, the test director, told Oppenheimer, "Now we're all sons of bitches." After viewing the results several participants signed petitions against loosing the monster they had created, but their protests fell on deaf ears. The Jornada del Muerto of New Mexico would not be the last site on planet Earth to experience an atomic explosion. Key Staff - Manhattan Project Scientists Who Invented the Atomic Bomb under the Manhattan Project: Robert Oppenheimer, David Bohm, Leo Szilard, Eugene Wigner, Otto Frisch, Rudolf Peierls, Felix Bloch, Niels Bohr, Emilio Segre, James Franck, Enrico Fermi, Klaus Fuchs and Edward Teller. (MORE)
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…amos The US had production plans to make 20 more in 1945 if Japan had refused to surrender: . 3 MK-III in September . 3 MK-III in October . 7 MK-III mod 1 in November . 7 MK-III mod 1 in December (MORE)
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 …April 12, 1945, Truman is left to run the war in the Pacific. Truman discovered the atomic bombs and on August 6, 1945, the Enola Gay (name of the plane) dropped the first atomic bomb on the city of Hiroshima in Japan. Three days later, on August 9, 1945, a second atomic bomb was dropped on Nagasaki (also in Japan). Shortly after the bombings, the Japanese emperor, Hiro Hito, surrendered. (MORE)
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.
yes, in a way, it was not directly after the dropping that it was over but the Japanese surrendered after that.
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 …in tons of TNT. A small bomb might be 10 kiloton of TNT, and a large one 50 Megaton. They are commonly designed to explode in the air, as that maximizes the blast damage, when the reflected pressure wave from the ground reacts against the still-incoming pressure wave from the bomb itself. These pressure waves are supersonic. The long term effects of the ionizing radiation are mainly in I-131, and in Leukaemias. (MORE)
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… Day. (MORE)
Those were the bomb dropped over Hiroshima and Nagasaki named Little boy and Fat Man. They were dropped on August 6 and 9 1945.
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… since the Japanese were fierce fighters & on their own soil would cost astronomical nos. of American lives. (MORE)
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…ed ending WWII. (MORE)
It was dropped by the USA on Hiroshima and Nagasaki on August 6 and August 9 , 1945
The Americans ordered the bombers to attack Japan as they hasn't surrenderd along with Germany
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…earl Harbor that's when the Americans got involved! answ2 . But to the question. There is no doubt that the (Nagasaki) atomic bomb ended WWII. I seem to recall that the Japanese Emperor's words were "We must accept the unacceptable" or words to that effect. Before and during the war, Japan was saturated with propaganda, much the same as the intensity only seen today in N Korea. They genuinely believed the Emperor was a God, and that the Japanese peoples were invincible. That is the propaganda behind hari kari, Kamikaze pilots, and the terrible incidents of the civilians in Okinawa throwing themselves off cliffs, rather than being overcome. It is quite difficult for folk who have not experienced such propaganda to appreciate it. Had the Atomic bombs not been dropped, victory for the Allies would have been no less certain, but at the expense of Allied lives. And if Okinawa was a measure, of about 20 times that number of civilian lives. These civilian casualties would have totalled much greater than the deaths at Hiroshima and Nagasaki. [And even today, when a person dies who had lived through Hiroshima, their death is chalked up to the bomb!] (MORE)
if you still have your world war 2 atomic bomb newspaper, its worth around $12,000 right now. but if you waited around another 10 years then it would be worth more likely than double that offer.
because atomic bombs blow up things real easy so they found out how to win wars much easily
The Atomic Bombs destroyed the Japanese war machine and frightened the people of Japan into submission and made their leaders surrender.
The use of the Atomic Bomb on Japan was to get Japan to surrender after Germany signed a treaty to end WWII.
President Truman stated that he needed to end the war and to collapse Japan's means to make war ever again.
The United States dropped two Atomic Bombs to end WW2. One was dropped on Nagasaki, Japan and the other on Hiroshima, Japan.
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!
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…omic weapons had not been used to end the war as quickly as possible. (MORE)
yes because after the war the amaricas haad droped a bomb but the bomb bad and didnt go off
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…ld have probably been the bloodiest battle in the war, with estimates of over a million casualties on both sides. (MORE)
It ended the war and made possible for the United States to keep lands in the Pacific.
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.
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…named) actual world war 2atomic bomb remaining after the war. This bomb was either detonatedlater in one of the nuclear test shots or its special nuclearmaterials were recycled to make newer more efficient/safer atomicbombs by 1949. Also the conventional explosives used in theexplosive lenses of world war 2 implosion type atomic bombs( composition b , baratol ) are much too unstablefor use in weapons intended for long term stockpiling. Several museums preserve atomic bomb casings , afew are: . Bradbury Science Museum, Los Alamos, NM . National Museum of Nuclear Science and History, Albuquerque,NM . Navy Museum, Washington, D.C. . West Point Museum, West Point, NY . Trinity Test Site, south entrance via Alamogordo, NM tularosagate, north entrance via stallion gate (only open 2 days a year,only fatman style casing) . etc. It is important to realize that when Los Alamos built the earlyatomic bombs they were not delivered to the field assembled andready to use, instead they came as a kit of parts requiring finalassembly in the field. For example a MK-III (e.g. fatman , the unnamed bomb) arrived in two heavy woodencrates and the plutonium was shipped separate from those crates. Ittook 3 days of work to perform final assembly of a MK-III in the field, if the bomb could not be used immediately then every3 days the lead acid battery that powered the bomb's electronicshad to be recharged until on the 9 th day after assembly,when the bomb had to be completely disassembled (which took 3 moredays) and the parts returned to their crates so the lead acidbattery could be replaced when the bomb was reassembled at a laterdate. The neutron source used in world war 2 atomic bombs (andalmost all atomic bombs built before about 1955) used polonium-210,and had to be removed and replaced every 138 days or the bomb mightnot explode when desired. The world war 2 atomic bombs were veryinconvenient to use and the US military was very anxious to seethem all replaced with newer models that were simpler to use. Another thing to be aware of is that not all apparent" fatman " casings exhibited in museums are really atomicbomb casings, some are pumpkin bomb casings (a pumpkinbomb was a large conventional blockbuster bomb used for practicedrops by atomic bomb crews, several were dropped on Japan prior tothe actual atomic bombings, they weighed the same and had the samesize and shape as a real MK-III ), and others are mockupsbuilt specifically for the exhibit. In 2003 I visited several museums with atomic bomb casings, thatyear none of them had little boy on exhibit. I found outwhy in one museum where they had replaced the little boy casing in the exhibit with a sign that stated all of them had beenremoved from museum exhibits to be modified to remove one externalfeature still classified top secret !!! Soeven if it is a real period casing, it may not appear as it didoriginally as parts may have been removed or modified for securityor other reasons. (MORE)
These bombings were not the most significant part of WorldWar Two. However they were certainly spectacular & stunningevents that lead directly to the Japanese decision to surrenderunconditionally in August 1945, and avoid the looming Alliedinvasion of the Japanese Home Islands that would have resu…lted inmillions of casualties and massive destruction. (MORE)
The first bomb was dropped in Hiroshima in august 6, 1945. Thesecond bomb was dropped over Nagasaki on august 9, 1945. Those werethe last attack in the war.