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Why porridge boil over?

Why boil over? When a pot of water comes to a boil, the steam "rattle, rattle" swells out, but the water does not flow out....

Summer, why bikes prone to tire explosion?

Summer, why bikes prone to tire explosion? In the summer, when the bicycle was on the road, suddenly "clicking," the tire exploded. It is very...

Zero degrees Celsius and absolute zero

Zero degrees Celsius and absolute zero In everyday life and manufacturing techniques, people use a thermometer to measure an object's temperature. For example, a physician...

Why can the soundwall transmit sound?

Why can the soundwall transmit sound? In Beijing, Thien Dan is famous in the world because of its majestic architectural art, but what attracts tourists...

Why do echoes in the alley at night?

Why do echoes in the alley at night? At night, a person walking in a small alley, in addition to his footsteps, also heard a...

Why can sand be arranged into beautiful projects?

Why can sand be arranged into beautiful projects? Kran, a German scientist, honored as the father of classical acoustics, once had a passion for studying...

Why does the water tap sometimes make a loud noise?

Why does the water tap sometimes make a loud noise? When you use tap water, you may sometimes hear a loud creaking sound in the...

Why in a “banana ball line”, can the ball fly in an arc?

Why in a "banana ball line", can the ball fly in an arc? If you are a football player, you have probably seen a free...

Why can skates be able to skate freely on ice?

Why can skates be able to skate freely on ice? Skating is a popular sport. When you see an athlete wearing a shoe with a...

Why is tug of war not just about strength?

Why is tug of war not just about strength? Triathlon contest is what? A lot of people will say: of course, to see which team's...

Why is cycling on clay very effortless?

Why is cycling on clay very effortless? When riding a bike on soft clay, two tires appear to be deflated, pedaling very hard. What is...

In the train running at high speed, why when jumping up still fall back to the old place?

In the train running at high speed, why when jumping up still fall back to the old place? Stand on the floor and jump once;...
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What is color television?

The human eye sees an object and can see its colors because the light it emits, or light from its surface, bounces off, enters...

What is an audio CD?

Edison's phonograph underwent constant innovation to become a popular electric phonograph. It is made up of the motor, the turntable, the receiver, and the...

What is the principle of the fire detector?

Fire harms human lives and property, damages the ecological environment. Fire prevention is a matter of concern to all humans. If it is possible...

What is the principle of the theft alarm?

In important places such as money, gold, silver, underground record storage, etc., if a fraudster suddenly sneaks in. the burglar alarm will immediately sound...