Umbrella and separator. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Umbrella and separator. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Open the umbrella, put its end on the floor and spin it. Throw a ball inside the umbrella. Let him ride the carousel!

But the ball does not want to roll. He crawls up to the edge of the umbrella. With a strong rotation, it flies to the floor and rolls far to the side. You already know why. The centrifugal force acts on the ball.

Interestingly, the action of the milk separator is based on the same phenomenon. The Latin word "separator" means "separator". And it really separates heavy cream from milk very well.

Of course, you know that there is fat in milk. It doesn't mix with the watery part of the milk, it floats in it as tiny droplets that can only be seen with a microscope. If the milk is allowed to sit quietly for several hours, the lighter droplets of fat will gradually float to the top and collect at the top of the dish. If the liquid is drained from this upper part, we will no longer get milk, but cream. They have more fat than milk. And at the bottom there will be lean milk, or back on big dairy farms and dairies too much milk needs to be processed. There is no time to wait until the cream settles on its own. This is where the separator is needed. This is a vessel that rotates very quickly. The vessel is like a barrel. Under the action of centrifugal force, milk is thrown to its walls. Remember how in experience with a rotating tin can a trickle of water hit sideways!

Umbrella and separator

Water is the heaviest part of milk. Therefore, it is pressed against the walls more strongly than lighter fat. Water squeezes out, displaces fat to the middle of the barrel. And there, in the middle, cream is collected, and on the circumference - reverse.

The separator is designed so that milk can be added all the time without stopping the rotation. And cream and skim flow all the time through special tubes. There is less cream, their yellowish stream is much thinner in appearance. A bluish reverse flows in a thick stream.

There are also large separators in which butter is made. Of these, only the reverse goes away, and the cream is not drained. They rotate in the separator until all the tiny fats stick together into one solid oil ball!

Only then does the work of centrifugal force end. The finished oil is removed from the separator, washed and pressed.

Author: Galpershtein L.Ya.

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