What is the deepest? Detailed answer

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What is the deepest? Detailed answer

Big encyclopedia for children and adults

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What is the deepest?

The Pacific Ocean has an average depth of 3980 m, the Atlantic - 3600 m. The deepest place is located in the Mariana Trench of the Pacific Ocean - 11022 m.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

When did men start shaving?

What determined whether men should wear long beards or shave? Throughout history, this has depended either on religious customs or on fashion. We do not know exactly which of the men shaved first. But we do know that the ancient Egyptians shaved their faces for religious reasons. At the same time, ancient Jews were required to wear beards, and there are still many Old Believer Jews who do this for religious reasons.

The ancient Greeks wore beards, and many portraits of ancient Greek philosophers are shown with long flowing beards. Then Alexander the Great introduced the custom of shaving. It is said that he did this so that during the battle his soldiers could not be grabbed by the beard. The ancient Romans did not shave until almost 300 BC. when the first hairdressers appeared.

As far as is known, the first Roman who shaved daily was Sipio Africanus (237-183 BC). And soon shaving becomes a common habit for the Romans. By the way, during the days of mourning, the Romans did not shave. The Greeks, on the other hand, cut their beards. The Roman habit of shaving influenced the Roman Catholic Church, where priests were beardless, clean-shaven.

In the XNUMXth-XNUMXth centuries, beards reappeared among priests, cardinals, and priests. Later, Roman Catholics, with the exception of monks, began to shave their beards again. In England the custom of shaving was introduced by the Saxons.

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Random news from the Archive

New window glass is healthier 15.07.2012

Most people prefer to live in houses with large windows that fill the room with sunlight. This is not surprising, since daylight gives us energy and has a significant impact on our well-being. However, not everyone was lucky enough to live in generously glazed houses. Today's thermally insulated sunshades for offices and homes are not optimized for light transmission that is optimal for our hormonal balance. A noticeable percentage of incident sunlight, the most efficient part of the spectrum, is reflected.

Fraunhofer Institute researcher Walter Glaubitt has developed a special anti-reflective glass that transmits maximum sunlight in the part of the spectrum to which the human eye is most sensitive.

Our biorhythms are most dependent on the blue part of the spectrum, so the thin (only 0,1 micron) inorganic Glaubitt coating transmits blue light at wavelengths of 450 and 500 nm. When you look at the new glass, it seems that the window is open, which has a positive effect on the mood of a person.

Why does the blue part of the spectrum have such an impact on how we feel? The fact is that at the end of the nerve connecting the retina of the eye and the hypothalamus, there are receptors that are sensitive to blue light. They convert blue light into light/dark signals, which are essential for the biological clock to function. Thus, blue light through nerve impulses regulates the level of melatonin, an excess of which can cause problems with sleep, concentration, and also cause depression and other psychological disorders. For example, seasonal affective disorder, also known as winter depression, is one of the consequences of high melatonin levels. The new window glass coating lets in more blue light, which means it partially solves the problem with excess melatonin, fatigue and bad mood.

The new glass will be sold under the commercial brand UNIGLAS | VITAL. In addition to its "anti-depressant" properties, it is characterized by increased light transmission: 79% compared to 66% for conventional three-layer double-glazed windows.

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