Paopao photography

At present, most parts of our country have entered winter, especially in the northeast, where the temperature is very low. Recently, a bubble blowing from the northeast at minus 30 degrees has instantly frozen on Weibo Hot Search, which has attracted the attention of netizens. The reason why I was surrounded by onlookers was because the camera slowly presented a very dreamy scene. ?

It turns out that the lowest temperature in Songling District of Daxinganling, Heilongjiang dropped to MINUS 30 degrees. Photographer Mr. Hu used a straw and foam water to blow bubbles outdoors, making frozen ice flowers instantly. Because of the extremely high temperature requirements, this scene can only blow out dream ice bubbles at around MINUS 30 degrees Celsius.

What is the principle? When the outside air temperature is much lower than the melting point of soapy water, and the soap bubbles come into contact with the ice surface with relatively high water vapor content, the water vapor quickly condenses to form ice crystals and releases heat, resulting in a higher bottom temperature and a cooler top inside the bubbles. In this case, the temperature difference in the bubble will make? Updraft? Appear, leading to the initial formation of the bottom of the foam? Small ice crystals? Sent to the middle and upper part of the bubble and further condensed and grew up, with snowflake ball effect.

Compared with the warm climate in the south, we can't blow out such a snowflake ball, but I believe that people the same age as Bian Xiao must have played the game of blowing bubbles with soapy water when they were young. Now I think it is full of memories. Compared with today's children, blowing bubbles has special toys. It seems that no matter what age children have no resistance to bubbles, they float around in the air and can't tell how happy they are. In sunny days, in the sun, it will also show fantastic colors, so do you know how to make it? The following small series tells you the easiest way: 1. Cut the soap into small pieces and put it in a cup, then rush into hot water to melt the soap pieces. 2. Add a proper amount of sugar and a bag of tea in the cup, cover it and leave it overnight. 3. Everything is OK, and a hygienic and environmentally-friendly super bubble liquid is made, and the effect is very ideal. ?