Hiroshima Day, Nagasaki Day /Importance of August 6th and 9th /Online quiz on Hiroshima, Nagasaki days/Second World War/ഹിരോഷിമ, നാഗസാക്കി ദിനാചരണം ,ക്വിസ്

Hiroshima Day, Nagasaki Day /Importance of August 6th and 9th /Online quiz on Hiroshima, Nagasaki days/Second World War/ഹിരോഷിമ, നാഗസാക്കി ദിനാചരണം ,ക്വിസ്

                                                         

The atomic bombings of the cities of Hiroshima and Nagasaki in Japan were conducted by the United States during the final stages of World War II in August 1945. The two bombings were the first and remain the only use of nuclear weapons in warfare.
Following a firebombing campaign that destroyed many Japanese cities, the Allies prepared for a costly invasion of Japan. Thewar in Europe ended when Nazi Germany signed its instrument of surrender on May 8, 1945, but the Pacific War continued. Together with the United Kingdom and China, the United States called for the unconditional surrender of the Japanese armed forces in the Potsdam Declaration on July 26, 1945, threatening "prompt and utter destruction".

By August 1945, the Allied Manhattan Project had successfully tested an atomic device and had produced weapons based on two alternate designs. The 509th Composite Group of the U.S. Army Air Forces was equipped with a Silverplate Boeing B-29 Superfortress that could deliver them from Tinian in the Mariana Islands. A uranium gun-type atomic bomb (Little Boy) was dropped on Hiroshima on August 6, 1945, followed by a plutonium implosion-type bomb (Fat Man) on the city of Nagasaki on August 9. Within the first two to four months of the bombings, the acute effects killed 90,000–166,000 people in Hiroshima and 60,000–80,000 in Nagasaki; roughly half of the deaths in each city occurred on the first day. During the following months, large numbers died from the effect of burns, radiation sickness, and other injuries, compounded by illness. In both cities, most of the dead were civilians, although Hiroshima had a sizeable garrison.

On this day in 1945, at 8:16 a.m. Japanese time, an American B-29 bomber, the Enola Gay, drops the world's first atom bomb, over the city of Hiroshima. Approximately 80,000 people are killed as a direct result of the blast, and another 35,000 are injured. At least another 60,000 would be dead by the end of the year from the effects of the fallout.
U.S. President Harry S. Truman, discouraged by the Japanese response to the Potsdam Conference's demand for unconditional surrender, made the decision to use the atom bomb to end the war in order to prevent what he predicted would be a much greater loss of life were the United States to invade the Japanese mainland. And so on August 5, while a "conventional" bombing of Japan was underway, "Little Boy," (the nickname for one of two atom bombs available for use against Japan), was loaded onto Lt. Col. Paul W. Tibbets' plane on Tinian Island in the Marianas. Tibbets' B-29, named the Enola Gay after his mother, left the island at 2:45 a.m. on August 6. Five and a half hours later, "Little Boy" was dropped, exploding 1,900 feet over a hospital and unleashing the equivalent of 12,500 tons of TNT. The bomb had several inscriptions scribbled on its shell, one of which read "Greetings to the Emperor from the men of theIndianapolis" (the ship that transported the bomb to the Marianas).
There were 90,000 buildings in Hiroshima before the bomb was dropped; only 28,000 remained after the bombing. Of the city's 200 doctors before the explosion; only 20 were left alive or capable of working. There were 1,780 nurses before—only 150 remained who were able to tend to the sick and dying.

On this day in 1945, a second atom bomb is dropped on Japan by the United States, at Nagasaki, resulting finally in Japan's unconditional surrender.
The devastation wrought at Hiroshima was not sufficient to convince the Japanese War Council to accept the Potsdam Conference's demand for unconditional surrender. The United States had already planned to drop their second atom bomb, nicknamed "Fat Man," on August 11 in the event of such recalcitrance, but bad weather expected for that day pushed the date up to August 9th. So at 1:56 a.m., a specially adapted B-29 bomber, called "Bock's Car," after its usual commander, Frederick Bock, took off from Tinian Island under the command of Maj. Charles W. Sweeney. Nagasaki was a shipbuilding center, the very industry intended for destruction. The bomb was dropped at 11:02 a.m., 1,650 feet above the city. The explosion unleashed the equivalent force of 22,000 tons of TNT. The hills that surrounded the city did a better job of containing the destructive force, but the number killed is estimated at anywhere between 60,000 and 80,000 (exact figures are impossible, the blast having obliterated bodies and disintegrated records).

General Leslie R. Groves, the man responsible for organizing the Manhattan Project, which solved the problem of producing and delivering the nuclear explosion, estimated that another atom bomb would be ready to use against Japan by August 17 or 18—but it was not necessary. Even though the War Council still remained divided ("It is far too early to say that the war is lost," opined the Minister of War), Emperor Hirohito, by request of two War Council members eager to end the war, met with the Council and declared that "continuing the war can only result in the annihilation of the Japanese people..." The Emperor of Japan gave his permission for unconditional surrender.