1, Watt was inspired to invent the steam engine when he saw the water boiling and the steam would open the lid.

2. Russian Mendeleev knocked the cards backwards, rearranged them, rearranged them, and found the periodic law of elements in playing cards.

3. When Archimedes took a bath, he found that the bathtub was full of water and found buoyancy, and put forward Archimedes theorem.

Newton was walking in the garden when he was hit by an apple and discovered the gravity of the earth.

5. Professor Xie Piluo, head of the department of mechanical engineering Department of MIT, keenly noticed that every time the bath water was put in, the vortex of the water always rotated counterclockwise.

6. Levin Hook invented the magnifying glass and microscope while playing.