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Where do the seas have their colored names? Detailed answer

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Where do the seas have colored names?

Black, White, Yellow, Red...

In the Black Sea, deeper than 100 m, there is too little oxygen dissolved in water. Even deeper, the water is saturated with hydrogen sulfide, no life is possible there. The surface of the sea is somewhat darker than in the ocean, which is probably why it was found Black.

The Red Sea got its name because of the color of its inhabitants - red corals, red algae. The average temperature in it is 35 °C.

The Yellow Sea between Korea and China owes its name to yellow silt, which is abundantly carried out by rivers flowing into it, such as the Yellow River ("Yellow River").

The White Sea in northern Russia is covered with ice and snow for most of the year.

Author: Mendeleev V.A.

 Random interesting fact from the Great Encyclopedia:

Who and when in the conditions of the Antarctic station removed his own appendix?

On April 29, 1961, the doctor of the sixth Soviet Antarctic expedition, Leonid Rogozov, felt weakness and pain in the right iliac region, as well as an increase in body temperature. In the absence of other doctors, he diagnosed himself with acute appendicitis and decided to perform an operation to remove the appendix himself, since there was no way to fly out of the station. Rogozov was assisted by two employees who gave tools and held a mirror to his stomach. In 1 hour 45 minutes, Rogozov completed all the necessary steps and successfully completed the operation.

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New communication principle - faster than fiber 04.11.2017

An international team of scientists has been able to build a last mile network in which data is transmitted using so-called "twisted" light, according to the University of Glasgow on its website. This experiment increased the chances that "swirling" light could become the new ubiquitous method of wireless data transmission, and that it would provide transmission speeds higher than fiber optic cable.

A team of physicists from the UK, Germany, New Zealand and Canada has managed to replicate the optical angular momentum, aka the angular momentum, required for "twisted" light to be transmitted unhindered through open space. The scientists were able to impart the necessary spin to photons - individual particles of light - by passing them through a hologram similar to those shown on credit cards.

In traditional digital communications, a photon is used as a one along with a zero to convey information. But due to the twisting effect, the turns of a photon can transmit an additional portion of data, simultaneously with zeros and ones. This ability of theirs should become the basis for a new generation of high-speed wireless data transmission technology. However, despite the use of optical angular momentum in wired transmission of information, it is not easy to use it for open spaces - interference such as atmospheric pressure drops interferes, which leads to loss of data in revolutions.

Now this problem has become solvable. Scientists have built a 1,6 km long last mile wireless network that exists in conditions close to real streets with their high-rise buildings, voids and various kinds of interference. The network was built in Erlangen in Germany. Unlike previous studies, the physicists managed to exhaustively describe the effect of turbulent air on the phase of structured light that propagates through channels of such length.

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