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Why is spring and autumn in northern China so short?

The seasons are divided and called differently due to the cold, warm climate and long and short day and night changes. We all know...

Is the wind formed like?

Fluttering flags, sailboats running ice, the water swaying, the waves crashing all these things are caused by the wind. When the wind is gentle,...

The brightest star?

The star that you see the brightest in the sky is not the brightest. And the star you have just seen is dim, don't...

Why is the temperature difference between northern and southern China in winter than in summer?

In winter, the lowest temperature in northern China usually drops to -40 ~ 30 ° C, and everywhere in the field is covered with...

Why does the coastal area have sea breezes and continental winds?

People living in coastal areas have the experience: during the day, especially in the afternoon, when the hottest is usually wind from the sea,...

What is a shooting star?

Since thousands of years ago, seeing a meteor, people have wondered in amazement: what is it? Where is it from? and man has believed...

Why is the upper wind stronger than the lower wind?

When one stands on a terrace or a tall tower, winds often feel stronger than on the ground; wind speeds can increase with height....

What is a comet?

There was a time when people considered comets' appearance as signs of great natural disasters, epidemics, great war, or death. Humans have a better idea...

Why is the wind on the water stronger than on the land?

On hot summer nights, people often like to stay cool on the banks of rivers, lakes, or bridges. This is because not only is...

Why does the desert region form wind sweep dust?

In the summer, some desert regions often experience strong winds. The swirling wind blew dust, trash, grass, and paper flipped into the sky, creating...

Why do hot winds appear in the mountains?

By its name, we can understand that it is a very hot wind. It is a phenomenon unique to the mountains, perhaps still unfamiliar...

Why can Meteorological Station make a weather forecast?

Every day morning, noon, and evening open the radio to hear the Weather Station announcements. You might ask, why can Meteorological Station make weather...
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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...