Why do English sailors wear black ties around their necks? Detailed answer

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Why do English sailors wear black ties around their necks? Detailed answer

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Why do English sailors wear black ties around their necks?

To wear a loosely tied black tie around the neck, the sailors of the English fleet were prescribed in 1805 after the Battle of Trafalgar - as a sign of mourning for Admiral Horatio Nelson.

Author: Kondrashov A.P.

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Who, when borrowing money, can pledge his name?

A Kwakiutl Indian who borrows money may pledge his name. Until he returns the debt, no one will address him by name.

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For the first time in history, scientists from the University of Manchester have made direct experimental observations of the so-called Schwinger effect, a subtle effect that can only occur in the region of high-energy cosmic events such as supernova explosions, neutron star collisions and black holes. By applying very high potential electric currents to specially designed graphene devices, scientists have been able to create particle-antiparticle pairs from literally nothing, from a deep vacuum.

According to existing theories, vacuum is a completely empty space, in which there is no matter and even elementary particles. However, 70 years ago, Nobel laureate Julian Schwinger predicted that the strongest electric and magnetic fields could break the basis of the vacuum (space-time continuum), leading to the spontaneous appearance of particle-antiparticle pairs, the so-called Schwinger pairs.

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