The six most powerful human inventions in history： how did it come about？

The most powerful place for human beings is that they can learn quickly from nature and make products that are helpful to them. The following six inventions are inspired by nature.

1. Sonar

In 1915, inspired by bats and dolphins, French physicist Paul Langevin invented a system for locating underwater objects using sound waves and echoes, which is now sonar technology.

2. Suction cups

Octopus sucker can make them suck on any uneven surface so as not to fall off. With this inspiration, human beings have developed sucker, which is tightly attached to the plane by the principles of vacuum and pressure.

3. Shinkansen train

The design of trunk train initially simulated bullet, which solved the noise problem and increased energy efficiency and speed.

4. Tape

Gecko can climb the surface entirely by the fine bristles at the bottom of toes, which was invented in 1922 by Richard Gurley Drew, a technician of 3M Company, after carefully observing gecko.

5, LED bulbs

This is inspired by fireflies, and the outer coating of LED bulbs will reflect some light inward, reducing its efficiency and brightness.

6. hook and loop or Velcro

Swiss engineer George de Mestral found burdock burr on his trousers and pet dog, and was inspired to create hook and loop.