How is the human eye arranged and why do we distinguish colors? Detailed answer

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How is the human eye arranged and why do we distinguish colors? Detailed answer

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How is the human eye arranged and why do we distinguish colors?

The beam reflected from the object is focused by the lens on the retina of the eye, forming an inverted image of the object. There are light-sensitive cells on the retina: approximately 110-125 million "rods" that form a black and white image, and about 6 million "cones" responsible for color perception.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

How is butter made?

Most of the butter sold in shops and markets is produced at oil mills that buy milk and sour cream from farmers.

After the sour cream is cleared of impurities, it is pasteurized. Most of the oil is produced from sweet sour cream. Sometimes pure sourdough is added to it - bacteria that produce lactic acid, mixed with other microorganisms. They help sour cream to ripen, to reach the desired condition. Sometimes dyes are added. Then the beating starts. It is produced in special rotating drums, where sour cream turns into a thick mass. Whipping takes about an hour. After that, the mixture is washed with water, the water drains. What remains is the oil.

Sometimes salt is added to the oil. The oil is kneaded mechanically until the desired density and water content are reached. Then the oil hardens, it is ready for packaging. Initially, it is packaged in large containers weighing about 30 kilograms. Then these packages are opened again and the oil is hung on the scales in any convenient quantities.

Man has been making oil since ancient times. It is mentioned many times in the Bible. In Proverbs 30-33: "Surely churning milk will produce butter." The Hindus used oil as early as 900 BC. e. It was part of their religious rites.

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