The simplest pump. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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The simplest pump. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

The device of water pumps was known even before our era, although the ancients explained incorrectly the reason forcing water to follow the piston.

They said that "nature is afraid of emptiness." For the first time in 1640, in Florence (Italy), when installing a pump (for pumping water from a very deep well, they encountered a seemingly inexplicable phenomenon: the water rose behind the piston to a height of only about 10 m. The help of scientists was required to explain this.

The Italian scientist Toricelli proved that the reason that water rises behind the piston is atmospheric pressure.

You can make a very simple model of a water pump yourself by using the hollow stem of a plant, such as angelica, or by taking a thick elderberry branch and removing the core from it. If the plant has partitions, cut the stem with a sharp knife so that one end of the tube is open, and cut off the other below the partition.

It remains to make a stick with a thickened handle that will tightly close the hole. It will be better if you put a rubber gasket on the stick, close to the handle. Wrap a rag on the lower end of the stick; secure it with a thread so that this piston fits snugly into the pump housing. Make a small hole in the lower partition with a needle - and the pump is ready.

The simplest pump

With this pump you will be able to collect water, launch a long powerful jet at 8-10 m and further, spray flowers. Its service life is small (2-3 days), as the stem will dry and let water through. But such a bamboo pump will be very durable and strong.

If your tube is open at both ends, then, of course, one end must be tightly closed with a stopper with a small hole in the center.

We recommend interesting experiments in physics:

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