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What is coral? Detailed answer

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What is coral?

Coral is one of the most curious and amazing objects in the world! To begin with, it should be said that red corals have been valued on a par with precious stones since time immemorial. But even more interesting is the huge number of superstitions associated with coral.

The Romans hung pieces of coral around the child's neck to ward off danger. They believed that coral could prevent or cure disease. In some places in Italy, coral is still worn to protect themselves from the "evil eye". And the most amazing thing is that the coral has changed the geography of the world!

What is coral? This is the skeleton of a coral polyp, a tiny jelly-like marine organism with many small tentacles. The polyp produces a calcareous substance that makes up the skeleton, which forms in the form of a cup that surrounds the polyp from all sides. First, the polyp is attached to the surface of the rock under water, and a new polyp buds from it. When the old polyp dies, living polyps continue to remain on its skeleton, and new ones in turn bud off from them. This is how coral is formed, as more and more generations of polyps grow on the skeletons of their predecessors. So coral grows layer by layer, and from them islands and reefs are formed in the ocean. These organisms are found in warm and tropical waters.

Corals are mainly found in the South Pacific, the Indian Ocean, the Mediterranean, and off the coast of Florida, Mexico, and the West Indies. The most significant coral formations are called fringing reefs, barrier reefs and atolls.

Fringing reefs are underwater coral patches attached to coastal rocks and out to the ocean. Barrier reefs are not connected to the mainland, but grow in the ocean at some distance from the coast. Atolls are ring-shaped coral islands. The Great Barrier Reef, located off the coast of Australia in the Queensland region, stretches for 1260 miles.

Author: Likum A.

 Random interesting fact from the Great Encyclopedia:

What poet kept many animals, among which were a bear, a crocodile and an eagle?

Lord Byron was very fond of animals. While studying at Cambridge, he was faced with a ban on keeping dogs in rooms and decided to get a bear cub. Since bears were not mentioned in the ban, the university could do nothing about this fact. Throughout his life, Byron's pets included a fox, a badger, a crocodile, an eagle, a crane, and a heron.

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California-based Quantenna Communications announced the start of deliveries of trial samples of the QSR1000 chipset, which allows data transmission over Wi-Fi technology at a record speed of 1,7 Gbps.

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To date, all other existing Wi-Fi chipsets support data transmission over only one, two or three channels. By adding a fourth channel, Quantenna was able to increase speeds by 400 Mbps over the fastest chipset on the market. In order to transmit data at a speed of 1,7 Gbps, it is necessary that both the transmitting and receiving devices support MIMO 4x4. At the same time QSR1000 maintains backward compatibility. That is, a router equipped with this chipset will support the previous Wi-Fi wireless standard, 802.11n, and 1x1, 2x2, and 3x3 MIMO configurations.

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