1. Newton
This important discovery of the law of universal gravitation originated from Newton's good deeds. An apple falling from a tree was a question worth studying for Newton. Newton was good at using hints from external objects to reveal step by step the law of universal gravitation that shocked the world.
2. German scientist Wegener
Inspired by a map, he proposed the famous theory of continental drift. Inspired by continental drift, one can discover something from tiny or even accidental hints of foreign objects in an ordinary map.
3. Ziyou
When Ziyou was the Prime Minister of Wucheng, there were storks living on the mound outside the city gate. The storks moved their nests to the stone tablet in front of a tomb. . The old man guarding the tomb said: "It suddenly moved its nest to a higher place, which means there is going to be a flood in this area, right?" Ziyou actively organized everyone to build boats, and finally survived a flash flood.
4. Edison
In the process of improving the telephone, he found that the template in the microphone vibrated with the sound of the voice. He found a needle and stood on the template. Gently press the upper end with your hand, and then speak to the template. The speed of the voice can cause the short needle to vibrate in different ways.
Edison drew a sketch and asked his assistant to make the machine. After many modifications, the first phonograph was born.
5. Wind power generation
Attempts to use wind power to generate electricity began as early as the beginning of the twentieth century. In the 1930s, Denmark, Sweden, the Soviet Union and the United States applied rotor technology from the aviation industry and successfully developed some small wind power devices. Widely used in windy islands and remote villages, the cost of generating electricity is much lower than that of a small internal combustion engine.
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