What wonder of the world could be seen in just 50 years? Detailed answer

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What wonder of the world could be seen in just 50 years? Detailed answer

Big encyclopedia for children and adults

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What wonder of the world could be seen in just 50 years?

This is the Colossus of Rhodes. It was built around 300 BC. e. on the Greek island of Rhodes, and collapsed around 222 BC. e. during a strong earthquake. For more than a thousand years, its fragments lay on the island, until, finally, they were sold by the Arabs, who captured Rhodes in 977, to a merchant who, as one of the chronicles tells, loaded 900 camels with them.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

Which animals have an internal clock set to a 47-hour life cycle?

All animals observe the so-called circadian rhythm, that is, the cyclic change of biological processes in the body, tied to the 24-hour length of the earth's day. The need to maintain a circadian rhythm is genetically based, since even blind creatures can perceive changes in light with photoreceptors on the skin. However, an eyeless fish Phreaticthys andruzzii has recently been discovered living in underground caves, in which the internal clock is set not to 24, but to 47 hours. A mutation is to blame for this, which turned off all the light-sensitive receptors on the body of these fish.

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Random news from the Archive

Sea water batteries 17.12.2016

Lithium-ion batteries used in modern mobile devices, along with advantages, also have disadvantages, including the complexity of recycling and the relatively high cost of a key component - lithium. Specialists from the South Korean Institute UNIST (Ulsan National Institute of Science and Technology) managed to develop a very attractive alternative - a battery that runs on sea water.

Strictly speaking, the created battery should be called sodium-air or sodium-oxygen. Such elements are known, but they are not yet ready for commercialization.

Sea water turned out to be an excellent "catholyte" - it simultaneously plays the role of a cathode and an electrolyte. According to the researchers, the constant flow of sea water provides the presence of sodium ions needed to store the charge in the porous electrode made of nanoparticles of cobalt-magnesium oxide. The anode was made of carbon.

The new battery is said to have demonstrated good energy efficiency and service life.

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