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surf power plant

08.04.2009

Next summer, off the coast of France, in the Gulf of Lion in the Mediterranean Sea, a prototype wave power plant of the SEAREV system (short for the French words "autonomous electric wave energy recovery system") is to be tested.

In the float, anchored at a sufficient depth, is an unbalanced flywheel of the type used in self-winding wristwatches. When the float swings on the waves, the flywheel turns either in one direction or the other, pumping fluid in the hydraulic system, and the fluid flow rotates the electric generator.

Several valves provide unidirectional flow of the working fluid. Depending on the strength of the wave, the power of such a floating power plant will be 500-700 kilowatts.

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Cats understand people 31.03.2020

Cat owners can be divided into 2 camps: some claim that their cat understands everything, but cannot answer, others that cats do not understand human speech at all. But what is it really? Do cats understand what the owner is saying, or are they guided only by the intonation in the voice?

Japanese scientists Atsuko Saito and Kazutaka Shinozuka tried to figure out this issue, the results of the study are amazing, because they managed to prove that cats do not just distinguish intonation, they understand human speech.

How exactly were the experiments carried out? It is clear that it is impossible to talk with cats in the literal sense of the word, more precisely, you can, but you will not understand the answer. Nevertheless, the scientists talked with 78 cats and cats, for the purity of the experiment, not only domestic cats, but also animals from cat cafes that do not have a specific owner participated in the study.

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Some cats can hear up to 20 names of objects and bring them to the owner, but this, of course, is the result of long training.

Intonation also plays an important role: thanks to the emotional tones of the voice, cats perfectly understand that the owner is angry or upset by one tone of voice.

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