For a long time, Newton thought that there must be a mysterious force pulling the planets in the solar system around the sun. But what kind of power is this? ?
Until one day, Newton was thinking under the apple tree in the garden, and an apple fell at his feet. Newton finally had an epiphany and his problem was gradually solved.
2. Luban invented the "saw"
One day, Lu Ban went to a high mountain to look for wood, and suddenly his foot slipped. He quickly reached for a clump of thatch by the roadside. My hand was cut by thatch and blood came out.
"Why is this simple thatch so sharp?" He forgot the pain of the wound, pulled up a thatch and studied it carefully, and found that there were many sharp little teeth on the edge of the grass. He scratched the back of the hand with these small teeth, and actually scratched a hole.
He thought, if I saw the tree with a tool with many small serrations, wouldn't I be able to see the wood soon? That must be much easier than chopping with an axe.
Therefore, Lu Ban asked the blacksmith to make dozens of iron pieces with sharp serrated edges and take them to the mountains for experiments. Sure enough, the tree was soon sawed off.
Lu Ban named this newly invented tool "Saw".
3. Zipper
Zipper was first invented by Chicago mechanic Judson in 189 1 year. In order to relieve the trouble of tying shoelaces every day, Judson invented a zipper which can replace shoelaces. This zipper consists of a row of hooks and a row of buttonholes. Pull an iron slider from bottom to top, and the hook and buttonhole can be fastened one by one. Judson sent the sample to Columbia Expo on 1893, which was well received and patented.
The invention of mankind-inspired by animals-ships and submarines came from people's imitation of fish and dolphins. Scientists have made the first batch of gas masks in the world according to the unique drug detection ability of wild boar nose. The rocket takes off by using the recoil principle of jellyfish and squid. Researchers have developed many military camouflage equipment for the army by studying the chameleon's color-changing ability. Scientists studied frog eyes and invented electronic frog eyes. The US Air Force has developed a miniature thermal sensor through the "hot eye" function of poisonous snakes. Humans also used the principle of leapfrog to design a toad ram (hang). Humans imitate the highly sensitive sense of smell of police dogs and create "electronic police dogs" for investigation.
References:
Baidu encyclopedia-invention and creation