Why doesn't the igloo melt from the inside? Detailed answer

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Why doesn't the igloo melt from the inside? Detailed answer

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Why doesn't the igloo melt from the inside?

Although stone and wooden houses have become widespread among the Eskimos, nevertheless, this northern people still build an igloo on some special occasions or during transitions. The igloo builds quickly and can withstand any weather.

A hole 1,5 meters long and 50 centimeters deep breaks out in a fresh snowdrift. Then, starting from the front wall of the pit, snow blocks are cut with a knife. They are shaped so that they lean inward when placed on edge. A circle of these blocks is laid out, and then its upper part is cut off in such a way that during construction, subsequent blocks follow a tapering spiral. Material in the course of work is cut out inside the house. The last block, whose upper edges are wider than the lower ones, covers the hole at the top. After that, all the cracks are covered with soft snow.

A small igloo can be built in a couple of hours. When the house is built, a woman takes over. She lights a cat-oil lamp, trying to keep it as hot as possible. Then she closes the entrance with a snow block and seals the needle tightly. Now the snow is starting to melt. But, since the roof of the house has a rounded shape, the water does not drip, but is gradually absorbed into the blocks, and they are almost completely saturated.

When the blocks are sufficiently saturated with water, she extinguishes the lamp and opens the door. Icy air rushes in, and after a short time, the fragile snow house becomes an ice dome! Now it is so strong that the roof can even support a polar bear and not fall through. And now it will not melt, and you can comfortably sit in it.

But of course, when the winter ends and the temperature rises, the igloo starts to melt, and usually the roof collapses first.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Why did the asteroid Aten get its name?

Discovered on January 7, 1976, the tiny asteroid Aten (about 800 meters across) is named after the ancient Egyptian sun god because its entire orbit lies inside the earth's orbit.

The maximum distance of the Aten from the Sun is 0,966 astronomical units, or the average distance of the Earth from the Sun.

Two more similar asteroids are known: Ra-Shalom and Hathor. The maximum removal of the first of them from the Sun does not exceed 0,832 astronomical units, the second - 0,844 astronomical units.

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