Who observes what invented what 3 kinds

Bell observed the principle that sound can produce electric current, and invented **.

The Wright brothers, observing the principles of aerodynamics, invented the airplane.

Galileo observed the pendulum and discovered the isochronism theorem of the pendulum.

Luban observed toothed blades of grass and invented the saw; Watt observed the lid of the kettle after the water boiled and invented the steam engine; Luban observed that the lotus leaf invented the umbrella.

There is also Luban who invented the saw, Zhang Heng saw the lunar eclipse and invented the **instrument, Bell observed the spring and magnet invented**, Leeuwenhoek observed the magnifying glass and invented the microscope, Newton's apple that fell to the ground discovered the law of gravitation of the earth, Watt observed the boiling kettle and invented the steam engine, Zhang Heng observed the lunar eclipse and invented the geokinetic instrument, Bell observed the spring and magnet invented**, Galileo observed the pendulum and discovered the isochronism theorem of the pendulum, the Wright brothers observed the principle of aerodynamics and invented the airplane, Bell observed the principle that sound can produce electric current and invented **, more.

Watt observed the boiling kettle and invented the steam engine, Zhang Heng observed the lunar eclipse and invented the geokinetic instrument, and Bell observed the spring and magnet invented **.

Zhang Heng saw the invention of the lunar eclipse ** instrument Bell observed the invention of springs and magnets**.

Luban saw the toothed leaf and invented the saw.

Edison observed that electric currents glow when passed through certain objects, inventing the electric light.

Leeuwenhoek observed the magnifying glass and invented the microscope Newton's apple on the ground discovered the law of gravitation on the earth.

Bell observed the principle that sound is capable of producing electric current, and invented **.

The Vegetable brothers observed the principle of power in the air and invented the airplane.

Luban observed toothed leaves and invented the saw.

Newton observed the apples on the ground and found the earth attractive.

The Wright brothers invented the airplane.

Summary. Hello dear, I'm glad to answer for you, people invented what according to what: 1. People invented artificial cold light according to fireflies. 2. Airplanes were invented based on birds. 3. People invented ultrasonic radar based on bats.

What did people invent on what basis?

Hello dear, I'm glad to answer for you, people invented what according to what: 1. People invented artificial cold light according to fireflies. 2. Airplanes were invented based on birds. 3. People invented ultrasonic radar based on bats.

There is also the invention of volt batteries based on electric fish. According to the downwind ears of jellyfish, the jellyfish ear wind was invented. The oar was invented based on the fins of the fish. According to the praying mantis arm or sawgrass, the saw was invented.

1. Nian quietly Luban observed that the toothed leaf cut the hand and invented the saw;

2. Newton observed that apples fell from trees and invented the law of gravitation;

3. The Wright brothers observed the principles of aerodynamics and invented the airplane;

4. Bell observed the principle that springs and magnets and sound can produce electric current, and invented **;

5. Cangjie observed the shape of all things and invented Chinese characters;

6. Working people invented the compass by observing magnets or magnets;

7. Zhang Heng observed the lunar eclipse and invented the geodynamic instrument;

8. Edison observed burning phosphorus and invented the electric light;

9. Galileo observed the pendulum and invented the isochronism theorem of the pendulum;

10. Lu Ban's wife observed her husband Qi Gao's hard work and invented the umbrella.

1. Newton observed apples falling from trees to the ground, inventing the earth's gravitational pull;

2. Watt saw the tea stove and invented the steam engine;

3. The French doctor Reneke saw a child knocking on wood and invented a stethoscope;

4. Meldoke saw that stones were boiled with fire, and the chain brigade invented gas;

5. Galileo observed the pendulum and discovered the isochronism theorem of the pendulum;

6. The Wright brothers observed the flight of birds and invented airplanes;

7. Cangjie observed the claw marks of birds and beasts, and invented Chinese characters according to the shape of the claw marks;

8. Bell observed the principle that sound can produce electric current, and invented **;

9. Lu Ban saw the sawtooth leaf and invented the saw to call the search early;

10. Franklin invented the lightning rod based on thunderstorms and lightning.

1. Newton observed apples falling from trees to the ground, inventing the earth's gravitational pull;

2. Watt saw the tea stove and sent his brother to make a steam engine;

3. Fa Xian's national doctor Reinek saw the child knocking on wood and invented the stethoscope;

4. Meldoke saw the use of fire to cook stones and invented gas;

5. Galileo observed the pendulum and discovered the isochronism theorem of the pendulum;

6. The Wright brothers observed the flight of birds and invented airplanes;

7. Cangjie Huzhi observed the claw marks of birds and beasts, and invented Chinese characters according to the shape of the claw marks;

8. Bell observed the principle that sound can produce electric current, and invented **;

9. Lu Ban saw the sawtooth leaf and invented the saw;

10. Franklin invented the lightning rod based on thunderstorms and lightning.