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Why do you hear “crackling” when you take off your sweater?

Why do you hear "crackling" when you take off your sweater? At night when you take off your sweater, sometimes you will hear the "rattle",...

Why a drop of ink after diffusion in water will not automatically gather?

Why a drop of ink after diffusion in water will not automatically gather? In everyday life, diffusion is a very common phenomenon. For example, put...

Why can’t a permanent engine be built?

Why can't a permanent engine be built? Since ancient times, in order to maintain survival, humans have invented and built simple machines, such as inclined...

Why when flying, behind the plane dragged a strip of white smoke?

Why when flying, behind the plane dragged a strip of white smoke? Hear the noisy airplane at the top of the head, looking up, often...

Why is the window glass freezing into ice flowers?

Why is the window glass freezing into snowflakes? In the cold days, waking up early in the morning, looking up at the window glass, saw...

Why use a pressure cooker to cook food easily?

Why use a pressure cooker to cook food easily? Pressure cookers, when boilers are heated, the pressure in the pot is very high. Why in...

Why dirty snow melts before clean snow?

Why dirty snow melts before clean snow? We know that snow melts quickly or slowly due to the amount of heat it absorbs. Dirty snow...

Why does the snowball roll bigger?

Why does the snowball roll bigger? The bigger the snowball can roll, the more often it is explained that the snowball relies on the effect...

Why say dry ice is not ordinary tape?

Why say dry ice is not ordinary tape? Dry ice is also ice, but it is not ordinary ice. What is the difference between dry...

Why is ice always closed on water?

Why is ice always closed on water? Water can freeze, which is a common occurrence in nature. Upon closer inspection, you may notice that the...

How do icicles under a porch form?

How do icicles under a porch form? After the snow, while on the roof is still covered with quite thick white snow, one can often...

Winter, why the breath in the mouth is white?

Winter, why the breath in the mouth is white? Athletes, after running with great effort, often open their mouths to exhale urgently. Have you noticed...
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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...