What is the relationship between the theory of relativity and the invention of nuclear weapons? Why is there such a relationship?

In 1905, shortly after A. Einstein proposed the special theory of relativity, he derived a strange formula. Since then, humans have been able to relate energy and mass so wonderfully from a philosophical level. Through simple calculation, a sesame seed also contains energy that was unimaginable by human civilization at that time. But even Einstein himself believed that it was just a mathematical form within the framework of special relativity and had no practical significance. No one knew at the time that the formula they were playing with as a joke was the most dangerous toy that nature has ever brought to human civilization.

In 1938, the situation in Europe was changing, and the war was approaching. O. Hahn discovered anomalies when bombarding uranium nuclei with slow neutrons. He reweighed the bombarded uranium and found that the mass was slightly less than before. Thinking of the huge energy that came out of nowhere during the experiment, and the formula that he seemed to have joked about many years ago, Hahn suddenly felt that he had opened a door that seemed to lead to hell and seemed to lead to heaven.

In 1941, N. Bohr and W. Heisenberg met at his home in Copenhagen. After Bohr was occupied in Denmark, he never met Heisenberg, Bohr's former partner in theoretical physics research. His arrival this time was to invite Bohr to participate in a secret plan of Nazi Germany. Whether it was because of Heisenberg's trust in his old partners or for the sake of human civilization, he intentionally or unintentionally revealed to Bohr that this project was about atomic weapons using nuclear fission. And by rejecting Heisenberg, Bohr knew that he could no longer stay in his motherland.

In the same year, Einstein received the news from the person with whom he had been furiously arguing, and immediately wrote a letter to then US President Roosevelt.

Then, a dangerous game that determines the direction of human civilization begins:

On one side of the superior German team is the famous old captain Heisenberg (one of the founders of quantum mechanics, Winner of the Nobel Prize in Physics in 1932), super striker Hahn, the king of radiochemistry who took the lead in scoring the first goal in the nuclear age (Winner of the Nobel Prize in Chemistry in 1944), H. Geiger, the steel midfielder and one of the most famous particle detectors Father, the whining thing in Fermi’s neutron deceleration experiment was the famous Geiger counter), midfielder core Bock (W. Bothe, one of the discoverers of neutrons, winner of the 1954 Nobel Prize in Physics), old and The strong gold medal goalkeeper M. Laue (M. Laue, who discovered the X-ray diffraction phenomenon in crystals, and he should be credited with the great development of biology in later generations, winner of the Nobel Prize in Physics in 1914), their coach is a modern physicist. Planck (M. Plank, winner of the Nobel Prize in Physics in 1918), the godfather of science.

The U.S. team has a luxurious lineup with rookie captain R. Oppenheimer (the famous father of the atomic bomb), and running on the left is fantasy winger E.O. Lawrence (Cyclone) The inventor of plutonium, winner of the Nobel Prize in Physics in 1939), and now the new forward G.T. Seaberg is in control of the ball (G.T. Seaberg, known as the father of plutonium, was largely responsible for the successful development of the first atomic bomb. In 1951, Nobel Winner of the Bell Prize in Chemistry), the one who just transferred is the famous midfielder engine quantum engineer Fermi (who pioneered the first reactor in history and won the Nobel Prize in Physics in 1938). The one who is shaky and absent-minded is the main attacker on the right. Hand Bethe (H. Bethe, head of the Theory Department, winner of the 1967 Nobel Prize in Physics), and actively running in the green jersey is the solid defender J. von Neumann (J. von Neumann, a great mathematician, The inventor of the computer and the person in charge of the calculation work for the development of the atomic bomb), the one who was doing nothing on the ball stand and calculating mathematical problems was the deluxe version of the goalkeeper Bohr (the main creator of quantum mechanics, winner of the 1922 Nobel Prize in Physics). Among the substitutes was the promising young man R. Feynman (1965 Nobel Prize winner in physics).

Let’s take a look at the auditorium. The audience atmosphere is very enthusiastic. Oh my God, isn’t it Einstein who is sitting there cheering for the American team?

In 1945, at 5:30, in a remote desert in New Mexico Here, mankind's first atomic bomb "Fat Man" was successfully ignited.

At this point, a new era has arrived.