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How did a simple pencil help separate whites from non-whites in South Africa? Detailed answer

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How did a simple pencil help separate whites from non-whites in South Africa?

During the apartheid regime in South Africa, it was often necessary to accurately classify a person as "white" or "colored". One of the tools for solving the problem was a simple pencil: it was inserted into the hair of the subject, and then asked to tilt his head. If the pencil did not fall out of the hair, it was considered that they had a sufficient degree of curlyness to record a person in the category of "colored". There were cases when, according to the results of the pencil test, members of the same family were separated, who could no longer live together.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

What bird is revered in almost all world religions?

The pelican is revered in almost all world religions. Among Muslims, it is considered a sacred bird - according to legend, the pelican carried stones in its throat bag for the construction of shrines in Mecca. In European heraldry, the pelican "feeding its children" is a symbol of selfless parental love: it was believed that it tears its own chest with its beak and feeds hungry chicks with blood. For this, early Christian writers compared him to Jesus Christ, who donated his blood for the salvation of mankind.

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Robot gardener 16.06.2017

The Roomba robot vacuum cleaner has a relative gardener. It is called Tertill and looks like Roomba. Tertill's task is to weed the beds, removing everything unnecessary, as Roomba does with garbage on the floor.

The gardener is powered by a built-in solar battery. So that he does not pluck the desired shoots, they should be fenced with special rings included in the kit. Weeding of sections of a given length is also provided.

The robot connects to a smartphone via Bluetooth. There is also a USB port - it is used for charging when the sun's energy is not enough.

Of course, the capabilities of the robot impose some restrictions on the layout of the landing. There should be enough free space between cultivated plants, and the bed itself should be as flat as possible so that the robot does not get stuck. And so that he does not go to weed the neighbor's garden, the site must be fenced. The robot does not uproot weeds, but mows them, so the procedure will have to be repeated constantly.

The approximate cost of the robot is $300.

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