When Watt was a child, he once saw the boiling water on the stove boiling, and the steam pushed the lid away. Watt put the lid back, but it was quickly pushed away. Watt kept taking the lid off, trying to find out why. Later, Watt realized that it was the power of steam that aroused his interest in steam and led to the invention of the steam engine.

Newton discovered the law of universal gravitation.

Newton, a great physicist, was curious when he saw the apples ripe when he was a child. He thought, why does everything on the earth fall to the ground after losing its support, but not in other directions? Later, he finally discovered the law of gravity.

3. Copernicus put forward Heliocentrism.

Astronomer Copernicus, in middle school, heard that the sundial can use the shadow of the sun to determine the time. Curious, he asked the teacher about the principle of the sundial, went home and found some waste materials, which were quickly made. He used sundials to study the laws of motion of the sun and the earth. After Copernicus, he put forward the famous Heliocentrism, which overthrew the geocentric fallacy that the sun revolves around the earth.

4. becquerel discovered the radioactive substance-uranium.

1896 At the beginning of the year, shortly after Roentgen discovered X-rays, at a regular meeting of the French Academy of Sciences, French scientist Poincare showed this discovery to people and put forward a guess. After the meeting, becquerel hurried back to his laboratory to design experiments with his father, a scientist, to verify Poincare's conjecture.

The experiment found that as long as the compound contains uranium, it will emit this magical ray, which he called "uranium ray". 1903, becquerel, who discovered the radioactive element uranium, and the Curie couple, who later discovered the radioactive elements polonium and radium, won the Nobel Prize in physics that year.