Are acne dangerous? Detailed answer

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Are acne dangerous? Detailed answer

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Are acne dangerous?

Sea eels and moray eels live only in salt water. Almost all species of conger eels and moray eels live in tropical warm water seas, and most of them - away from the coast. Some of these eels reach gigantic sizes. Once an eel weighing seventy-two kilograms and 2,7 meters long was caught!

Moray eels can reach three meters in length, although most of them are less than one meter. Many people consider moray eels dangerous. They live among underwater rocks and coral reefs, where they hide in crevices and caves. When moray eels begin to feel hungry, they jump out of their shelters with an arrow and grab a victim floating by. They have very strong jaws and sharp teeth.

The ancient Romans knew about the existence of moray eels and considered their poison deadly. However, objective data say that people bitten by moray eels show no signs of poisoning. And yet, the moray eel is dangerous: it can sometimes attack a person and bite very seriously. An eel, which is actually dangerous, is not an eel at all.

The electric eel belongs to the same class of fish as carp, roach, and gudgeon. It lives only off the coast of South America. About four-fifths of his body is made up of special tissues containing electrical cells. If you touch them, the electric eel can be discharged, and the person will receive a strong electric shock.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

How fast does hair grow?

In men who are prone to baldness, hair does not grow fast enough. Boys seem to grow hair too fast.

The rate of hair growth is actually measured and is about 12 mm per month. Hair does not grow at a certain rate every day, but still follows a certain rhythm. Hair grows slowly at night. Growth accelerates during the day. Between 10 and 11 o'clock the rate of growth is greatest. Then the decline comes again.

The peak of growth occurs between 14 and 16 hours, then growth slows down again. But these fluctuations in growth are so small that they cannot be noticed. Don't expect to see in the mirror how much your hair has grown in a given amount of time. If all the hair on the body grew the same way as on the head, then it would be possible to calculate how much hair grows on the body. Such hair would grow at 3 cm per minute, and by the end of the year they would be 59 km long. Not all people have the same amount of hair.

Blondes have thicker hair than brunettes. People with red hair have a small amount of hair, and they are less durable.

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Random news from the Archive

A method for spontaneous learning of memristor neural networks has been developed 24.03.2021

A new technology that can improve the learnability of artificial neural networks has been unveiled by an international team of researchers affiliated with the Ulsan National Institute of Science and Technology (UNIST) and Tsinghua University in China.

The proposed method exploits the "resistance drift" (rise in electrical resistance) of a phase change material in semiconductor memory during training. Information updates are recorded by increasing the electrical resistance in the memristor, which acts as a synapse and additionally takes into account the relationship between the changing template and the training data.

The effectiveness of this method was demonstrated using experimental phase change memristor (PCM) arrays that worked as a neural network. In tests to classify handwritten text consisting of numbers from 0 to 9, such devices showed the effect of improving learning ability by about 3%. In particular, the recognition accuracy of the number 8, which is traditionally difficult to classify in handwritten form, has significantly increased. The learning ability has improved due to the synapse update pattern, which changes depending on the complexity of the classification.

An important advantage of the new method is that the learnability can be improved without additional energy costs, since the resistance of the PCM increases spontaneously due to structural relaxation after the transition to the amorphous phase.

The researchers expect that their results will contribute to the development of learning algorithms that use the properties of memristor devices and open up a new direction in the development of neuromorphic computing chips.

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