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Why does hot water retain heat?

Why does hot water retain heat? Pour a cup of boiling water, leave it in the air, and soon it will cool. But, if boiling...

Why fire always up?

Why fire always up? In the natural world and in our daily lives, anyone can observe the burning flame is always upward, such as a...

Why do double-glazing have to be installed on train windows?

Why do double-glazing have to be installed on train windows? Train is a kind of long-distance transportation in today's human society. Because the train's journey...

Why is fur coat particularly good for keeping warm?

Why is fur coat particularly good for keeping warm? In the cold winter, people often prefer to wear fluffy coats to combat cold. Why are...

In winter, why touch iron is colder than wood?

In winter, why touch iron is colder than wood? Almost everyone knows this: winter in the outdoors, no matter how we touch the iron staff,...

Why is the fan running or manual fan feeling cool?

Why is the fan running or manual fan feeling cool? In the summer, when we feel very hot in the room, we often turn on...

Why can solid corn kernels turn into crunchy popcorn?

Why can solid corn kernels turn into crunchy popcorn? Popcorn is a snack for free time, both spongy and crunchy. How was it made? Raw...

Why is it easier to peel when boiling eggs, soaking in cold water?

Why is it easier to peel when boiling eggs, soaking in cold water? Chicken eggs include hard shells and whites, soft yolks form. Normally, after...

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...

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Why Isn’t The Sky Purple?

Why Isn't The Sky Purple? If you know the explanation for why the sky's blue, you've heard that sunlight is white light composed of many...

How does it rain ?

How does it rain ? Plants need it to grow, animals need it to survive, and the human body needs it to stay hydrated and...

Why does colored light often appear in the sky of the North and South poles?

Why does colored light often appear in the sky of the North and South poles? Colored halos from past to present are very attractive to...

Why do clouds have different colors?

Why do clouds have different colors? You must have seen clouds of many colors. There are fluffy white clouds, dark gray clouds, thanks to gray...

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