Trinity, the first successful test of a fission nuclear bomb, how did it influence Nagasaki?


“It was a sunrise like the world has never seen. A great green super sun rose in a fraction of a second…”. This was written by William Laurence for the New York Times, after witnessing the Trinity test, the first nuclear fission bomb.

In the early morning of July 16, 1945, the human being saw for the first time the effects of a nuclear bomb. For the following August, the Japanese cities Hiroshima and Nagasaki would feel them firsthand.

The Trinity test, carried out in the Alamogordo area, in the Los Alamos desert, United States, was the first key point of the Manhattan Project, which sought to create the atomic bomb before the Nazis, in World War II.

“I have become death, the destroyer of worlds.” The phrase, which belongs to the Indian text Bhagavad Gita, was remembered by the leader of the Manhattan Project, J. Robert Oppenheimer, after seeing the enormous effect of Trinity.

The Trinity test and how the witnesses saw the atomic bomb

This bomb used plutonium as fissile material. fission, according to the Nuclear Forum portal, it is the reaction in which a heavy nucleus, when bombarded with neutrons, becomes unstable and decomposes, multiplying the effect.

Explain the newspaper El Periodico: According to preliminary calculations based on newly discovered nuclear fission, compressing the plutonium atoms present in the center of the device would increase the pressure and density of the substance and, in this way, a chain reaction would be triggered. Hence the energy released by the nuclear explosion.”

At 5:29:45 local time, the device exploded, releasing an energy of 19 kilotons. It left a crater three meters deep and 330 meters wide.

As Laurence relates in his narration, the sky and the surrounding mountains lit up for a second or two, from purple to green, and finally to white. “(It rose) to a height of more than 2.5 kilometers, rising higher and higher until it touched the clouds, while lighting up the earth and the sky with a dazzling brightness due to its intensity,” The NY Times reporter closed.

Isidor Rabi, discoverer of nuclear magnetic resonance and Trinity witness, described, quoted by the BBC: “It is the brightest light I have ever seen, or that I think anyone has ever seen. Explodes; it goes off; goes through you It was a vision that was seen more than with the eye.”

Trinity’s power also created the first quasicrystal of human origin. The material was born in molten sand in the area, and had previously only been seen in meteorites. Due to its origin, this quasicrystal is called trinitite.

The Nagasaki Fat Man bomb, Trinity’s “sister”

The United States, seeking the surrender of Japan to end the war in the Pacific, dropped bombs on Hiroshima and Nagasaki on August 6 and 9, 1945.

For the fission of the first, Little Boy, uranium was used; for the second, Fat Man, plutonium was used, as tested with Trinity. The results were devastating for the Japanese population, which suffered between 150,000 and 250,000 deaths, not counting the wounded and their successors.

Since then, only experiments and tests have been carried out, but no other world population has suffered direct bombardment of this type. The risk is permanent, as long as countries keep nuclear material in their arsenal.

And it all started with Trinity.

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