What did the ancient root mean, from which the names of white and black colors originated? Detailed answer

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What did the ancient root mean, from which the names of white and black colors originated? Detailed answer

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What did the ancient root mean, from which the names of white and black colors originated?

From the Proto-Indo-European root "bhleg-", meaning "to burn, to shine", the names of two opposite colors originated. First, two Proto-German words arose: "blakaz" ("burnt") and "blankaz" ("bright", "shining"). The first eventually gave the name to the black color in English ("black"), and the second - to the white color in French ("blanc") and many other European languages.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Can dogs see colors?

A dog in the family is always everyone's favorite, a true friend who is always with you at home and on a walk, and therefore it is very difficult to imagine that a dog sees the world in a completely different way than you: dogs do not distinguish colors. Experiment after experiment was carried out in order to find out whether it was possible in any way to make the dog distinguish colors. Usually food was used in the experiment. A certain color meant a signal to eat, the rest did not. But the dog was never able to distinguish one color from another. To distinguish things, dogs rely on their unique sense of smell.

Well, what about cats? Similar experiments were also carried out with them, and just like dogs, cats were unable to distinguish colors. It turned out that the cat perceives everything in gray. So is there an animal in the world that can distinguish colors?

As experiments have shown, the only creature other than humans capable of distinguishing colors is a monkey, which could be taught to open a door of a certain color, behind which food was hidden. In fact, the color "blindness" of animals is quite understandable.

Most wild animals hunt in the evenings and at night when all colors are washed out. In addition, the skins of many animals have a monotonous color. Therefore, the ability to distinguish colors for animals is not so vital. Most animals have developed their other senses to such an extent that they can get along quite well in their own world.

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Random news from the Archive

Cold-resistant nickel-cadmium batteries 16.08.2013

Panasonic announced the release of nickel-cadmium rechargeable batteries, which retain their qualities at low temperatures.

As you know, conventional nickel-cadmium batteries quickly lose capacity when cooled. Batteries of the Cadnica GT series, according to the manufacturer, are designed to operate at temperatures down to -40°C. Evaluation samples of these power supplies begin shipping this month. In the future, it is planned to produce a million Cadnica GT batteries every month.

To overcome the weak point of the current nickel-cadmium batteries, the developers reduced the structure of the material used in the negative electrode, improved the electrolyte formula, and changed the positive electrode using a high-density sintered material. This helped to increase the area of the negative electrode and compensate for the decrease in its surface activity with decreasing temperature. The new electrolyte does not freeze and does not lose its properties even at very low temperatures. By increasing the density of the positive electrode, it was possible to increase the battery life.

It should be noted that new batteries still lose some capacity as the temperature drops, but much more slowly than conventional ones. So, at -40°C, the capacity still exceeds 60% of the original. Conventional nickel-cadmium batteries are practically inoperable even at -20°C.

Panasonic Cadnica GT frost-resistant batteries are expected to be used as a backup power source for outdoor electronic systems, including traffic lights, base stations, solar-powered street lamps, as well as backup lighting systems from cold storage warehouses.

The series includes models of size SC, C and D with a capacity of 1500, 2500 and 4000 mAh, respectively. All of them are designed for operation in the temperature range from -40°C to +60°C.

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