The video of splashing water into ice exploded again. What is the principle of water splashing into ice?

Some experimenters have done experiments. In Heilongjiang Province, a cup of water at 10 degree Celsius was thrown into the sky at MINUS 36 degrees Celsius. Water won't freeze in mid-air. Then the experimenter poured water at 37℃ into the air, and some water vapor appeared, but it did not achieve the amazing effect of water splashing into ice. Finally, the experimenter poured 90℃ hot water into the air, and a miracle appeared. Hot water is drawn into an arc, forming a perfect effect of splashing water into ice. The experimenter found that the effect of splashing water into ice fell to the ground, but it was actually water, not ice, just because the ground temperature was low, and water quickly became ice.

Most of the effects you can see when you pour water into ice are not the instant freezing of hot water. The large white in the picture is the effect of water mist, which is the same as the white fog produced by our breathing in winter. In addition, many people on the Internet have unilaterally explained that hot water is easier to freeze, and even mentioned the Mba effect, which is actually a misunderstanding. Mpeba effect refers to the phenomenon that the liquid with higher temperature freezes before the liquid with lower temperature in the same container, the same mass and the same cooling environment. Note that the slight height here has nothing to do with splashing water into the ice!

Interpretation of the principle of water splashing into ice, interpretation of 1, hot water evaporates quickly, and the evaporated water is more likely to become water mist when it is cold, so the effect of hot water splashing into ice is more obvious. Explanation 2: If you really want to pour water into ice, more accurately, water becomes ice. Zhang Jihuai, an expert in cloud physics at China Institute of Meteorological Sciences, thinks that the explanation in an article is more convincing. It is said that when the ambient temperature reaches below -40℃, it is the critical temperature for supercooled water droplets to freeze instantly. When the temperature is higher than -30℃, it is difficult to achieve instantaneous freezing. The diameter of water droplets should be between a few microns and 200 microns, which is almost equal to the size of rain we usually see in Mao Mao.

The basic condition for instantaneous freezing of water droplets is that the temperature is below -40℃. In this case, two physical changes will occur in the water to achieve freezing. First, after freezing at low temperature, the volume of water droplets increases and latent heat is released; Then the latent heat released by the water droplets is from the outside to the inside, and the outer layer of the water droplets freezes first, and then gradually freezes inward. Therefore, the lower the temperature, the faster the droplet freezes; The smaller the water droplets, the faster the freezing speed. When the temperature is below -40℃, it is not enough to realize the formation of water ice. Countless water droplets on the outer layer can freeze quickly, but there is still water inside. It takes some time for the water droplets to freeze completely. There is also a special situation, that is, cold air carries a large number of ice cores across the snow-capped mountains, which may splash water to form ice. It's too difficult to realize the real replenishment ice, but the effect of the fake replenishment ice is amazing! You can go out and try if you have the conditions! But remind everyone to pay attention to safety. If you splash water in the wrong way, you can easily burn yourself. Finally, it is concluded that the influence conditions of splashing water are as follows: the ambient temperature is at least -30℃, and the lower the temperature, the better the effect; The water temperature is higher than 90℃.