Toggle display of website navigation Argument: May 30, Their use was, therefore, unnecessary.
Melissa 73 comments Olivia asks: Why is it that Chernobyl is still toxic, but there are millions of people living in Hiroshima and Nagasaki without dying?
On August 6 and 9,U.
Fat Man and Little Boy Dropped by the Enola Gay on Hiroshima on August 6,Little Boy was a uranium- fueled bomb about 10 feet long and just over two feet across, that held pounds of uranium and weighed nearly 10, pounds.
When he exploded as planned nearly feet above Hiroshima, about two pounds of uranium underwent nuclear fission as it released nearly 16 kilotons of explosive force. Since Hiroshima was on a plain, Little Boy caused immense damage.
Since then, approximately 1, peopleor about 0. Squat and round, Fat Man, so named for its resemblance to Kasper Gutman from The Maltese Falconwas dropped three days later on the city of Nagasaki on August 9, Because the bomb exploded in a valley, much of the city was protected from the blast.
Nonetheless, it is estimated that between 45, and 70, died immediately, and another 75, were injured. No data on subsequent cancer deaths attributable to radiation exposure from the bomb is readily available. The design of the reactors at Chernobyl was significantly flawed. Second, rather than having a top-notch containment structure consisting of a steel liner plate and post-tensioning and conventional steel reinforced concrete, at Chernobyl they only used heavy concrete.
On April 26,engineers wanted to run a test of how long electrical turbines powered by the reactor would continue operating when the reactor was no longer producing power. This included turning off most automatic safety controls and removing ever more control rods which absorb neutrons and limit the reaction.
As they ran the experiment, less cooling water entered the reactor, and what was there began to turn to steam. As less coolant was available, the reaction increased to dangerous levels. To counteract this, the operators tried to reinsert the remaining control rods.
Sadly, the rods also had a design flaw in the graphite tips. This resulted in the displacement of the coolant before the reaction could be brought under control.
In a nutshell, as these tips displaced the coolant, within seconds the reaction actually increased drastically due to the heat, creating even more steam, and thus getting rid of more coolant.
This might have not been so bad had the control rods been able to be inserted fully to perform their function of absorbing neutrons and thus slowing the reaction, except the heat became so intense, that some of the graphite rods fractured, jamming the rods at about one third of the way in.
So, in the end, when the nearly graphite tips were inserted into the fuel, reactivity increased rapidly, rather than slowed as was supposed to happen, and the whole thing blew up. It is estimated that about seven to ten tons of nuclear fuel were released and at least 28 people died directly as a result of the explosion.
It is further estimated that over 90, square miles of land was seriously contaminated with the worst effects being felt in Ukraine, Belarus and Russia. However, radiation quickly spread in the wind and affected wide swaths of the northern hemisphere and Europe, including England, Scotland and Wales.
Hard data on the number of people who died as a result of the radioactive release are difficult to find. It is known that of the people exposed to super high radiation levels immediately after the accident, 47 are now deceased. Additionally, it has been reported that thyroid disease skyrocketed in those countries closest to Chernobyl; by7, cases of thyroid cancer were recorded in Ukraine, Belarus and Russia.
Radiation Contamination Most experts agree that the areas in the 30 kilometer Chernobyl exclusion zone are terribly contaminated with radioactive isotopes like caesium, strontium and iodine, and, therefore, are unsafe for human habitation.
Yet neither Nagasaki nor Hiroshima suffer these conditions. This difference is attributable to three factors: Amount Little Boy had around pounds of uranium, Fat Man contained about 14 pounds of plutonium and reactor number four had about tons of nuclear fuel.
As a result, the radioactive debris was taken aloft and dispersed by the mushroom cloud rather than being drilled into the earth. On the other hand, when reactor number four melted down at ground levelthe soil underwent neutron activation, where the already active neutrons in the burning fuel reacted with the soil causing it to become radioactive.
Uncertain Future Lately, some weird reports have been coming from the Chernobyl Exclusion Zone — wild animals have returned, and, for the most part, they seem fine.On two days in August , U.S. planes dropped two atomic bombs, one on Hiroshima, another on Nagasaki, leading to the unconditional surrender of Japan and the end of World War II CBS News Logo NewsFounded: Sep 18, Hiroshima and Nagasaki Bombing Timeline.
Hiroshima and Nagasaki Bombing Timeline. "Atomic Bombing of Hiroshima and Nagasaki." World War II Database. A History of the th Composite Group as Told by the Veterans that Dropped the Atomic Bombs on Japan.
Richard Rhodes. World War 2 Atomic Bomb. On August 6 and 9, , the cities of Hiroshima and Nagasaki were destroyed by the first atomic bombs used in warfare.
Committee on Damage by Atomic Bombs in Hiroshima and Nagasaki, Hiroshima and Nagasaki: The Physical, Medical, and Social Effects of the Atomic Bombings (London, ). Nagasaki Nicknamed 'Fat Man' (a reference to Churchill), the bomb, which used plutonium , was dropped by parachute at on 9 August by an American B29 .
The U.S. use of nuclear weapons against Japan during World War II has long been a subject of emotional debate. Initially, few questioned President Truman’s decision to drop two atomic bombs, on. Chernobyl disaster: Chernobyl disaster, an accident at the Chernobyl nuclear power station in the Soviet Union in , the worst disaster in nuclear power generation history.
Between 2 and 50 people were killed in the initial explosions, and dozens more contracted serious radiation sickness, some .