Ask a touching story of a scientist, 200-300 words, easy to understand.

It was a crucial moment on the eve of the successful development of the first atomic bomb. One day, the famous Canadian scientist Slotin came to the laboratory as usual, picked up a screwdriver and devoted himself to studying the critical mass of two uranium blocks in orbit. Suddenly, he only felt his hand slip and the screwdriver fell to the ground. In a flash, two pieces of uranium gave off a terrible glare and were about to slide together. In the eyes of ordinary people, this may be a very small accident, but scientists understand that when two pieces of uranium are synthesized into one piece of uranium with critical mass, an explosion will occur. This is not an ordinary explosion, but an atomic split explosion, a "mini atomic bomb" explosion.

At the moment when this terrible explosion was about to happen, Slating kept a cool head and didn't panic in the face of danger. With his dexterous and powerful hands, he quickly and decisively smashed two uranium blocks that were about to fall, thus avoiding a devastating nuclear explosion.

Because of Zaiting's decisive action, precious precision equipment in the laboratory was saved, and colleagues who participated in the research were also saved. However, the famous scientist Tu Youyou suffered deadly nuclear radiation. Nine days later, the scientist who was participating in an important research project passed away with a painful smile. He laid the foundation for his sacred career with his life.

Slotin's action aroused strong repercussions among scientists. In recognition of this scientist's fearless dedication, people praised him as "the man who broke the atomic bomb with both hands".