How many people hear music in their head? Detailed answer

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How many people hear music in their head? Detailed answer

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How many people hear music in their head?

Musical hallucinations are inherent in at least one person out of every 10, and women - more often than men.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

How to determine air temperature by the frequency of cricket chirping?

The sounds of crickets are caused by the friction of their wings or legs against each other - this is how males call females. By the frequency of chirring, you can determine the temperature of the air. To do this, you need to count the number of sounds in 25 seconds, divide by 3 and add 4 to the result - you get the temperature in degrees Celsius. The formula works correctly only above 10°C, because at lower temperatures crickets are rarely disposed to love games.

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In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

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Efficient hemp supercapacitors 25.08.2014

Canadian researchers have found that hemp fibers are not inferior to graphene in their ability to store electrical energy. Engineers proposed to create the supercapacitors of the future from this plant. The new technology will be presented at the 248th meeting of the American Chemical Society.

As you know, supercapacitors, unlike conventional batteries, can be charged and give off energy in just a few seconds. But they have a significant drawback: in terms of energy density, they are inferior to batteries. This indicator can be improved by using electrodes if they are made from new types of materials. Today, graphene is considered the main candidate for such a role, but hemp fiber electrodes, as it turned out, are not inferior to graphene electrodes in performance, and their cost will be noticeably less.

David Mitlin and colleagues studied the waste products from the production of ropes, ropes and clothes from hemp, in particular fibers from the phloem of the plant stems. When the material is heated during the day to a temperature of 180°C, followed by heating to an even higher temperature, carbon nanosheets begin to peel off from it. Supercapacitors, in which the electrodes consist of such a material, and the ionic liquid performs the electrolyte function, surpass all devices of this type available on the market in terms of heat resistance (up to 93 ° C) and capacity. The new supercapacitors have achieved an energy density of 12 Wh/kg, two to three times higher than standard devices.

Currently, Mitlin's group has already begun to establish small-scale production of supercapacitors from hemp.

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