There is a famous motto: "Truth is born after a hundred question marks." This maxim is also true in itself. In fact, it is not difficult to find out the truth, and it is not easy to say it. The truth is always by your side. Whether you can find it depends on whether you have a pair of keen eyes, a thinking brain and the courage to stick to the truth. Throughout the history of scientific and technological development for thousands of years, the discoverers and founders of theorems, laws and theories are almost all very good at seeing problems from tiny and commonplace natural phenomena, seeking the source, and finally putting "?" Straighten into "!" Find the truth. Take a bath, for example. It's a very common thing. However, Professor Xie Piluo, head of the Department of Mechanical Engineering at the Massachusetts Institute of Technology, is keenly aware that every time the bath water is put in, the vortex of the water always rotates counterclockwise. Why is this? Xie Piluo grasped a question mark tightly and conducted repeated experiments and research. 1962, he published a paper that this vortex is related to the earth's rotation, and if the earth stops rotating, it will not be produced. Because the earth keeps spinning from west to east, and the United States is in the northern hemisphere, the bath water rotates counterclockwise, the typhoon in the northern hemisphere rotates counterclockwise, and the typhoon in the northern hemisphere rotates counterclockwise, just like the whirlpool of bath water. He also asserted that if the whirlpool of bath water rotates clockwise in the southern hemisphere, it will not form a whirlpool at the equator. His views have aroused the interest of scientists all over the world, and they are everywhere. Coincidentally. More than 60 years ago, a biologist named Miffson found that there was an earthworm on the east coast of the United States and the west coast of Europe at the same latitude, but not on the west coast of the United States. Why? This problem attracted the attention of German geologist Wei Gena, who was studying the origin of the Great Trap and the coast. Wei Gena believed that small earthworms with limited activities could not cross the ocean. Its distribution just shows that the European continent and the American continent were originally connected, but later split into two continents. He took the geographical distribution of earthworms as an example and wrote it into his masterpiece The Origin of the Continent and the Coast. The most interesting thing is an Austrian doctor. Seeing my son sleeping, my eyes suddenly turned and I felt very strange. He soon woke up his son. His son said that he had just had a dream. The doctor thought, "Eye movement can't be related to dreaming." So he took his son, wife and neighbors as the experimental objects, conducted repeated observation experiments, and finally wrote a paper, pointing out that when people's eyes turn, it means that sleeping is really a dream. Nowadays, people study it. These are very common things, but people who "ask the truth in the casserole" have found, invented, created and made progress. In the history of science, there are many such examples, which show that science is not mysterious and truth is not far away. As long as you are modest, after you have answered a hundred question marks, you will surely find out the truth.