How to recognize a lefty? Detailed answer

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How to recognize a lefty? Detailed answer

Big encyclopedia for children and adults

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How to recognize a lefty?

Simple enough. Even if a person has been taught from childhood to write and hold a spoon with his right hand, ask him to put both palms together, interlacing his fingers. The left-hander will definitely put the thumb of his left hand on top.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

Why are the stones so different?

Is there a boy all over the world who did not collect pebbles of various shapes and colors at one time? Different in size and color, smooth and rough, reminiscent of precious stones - they just make us collect them!

They look so attractive because they are made up of one or more minerals. It is these minerals that give various stones their beautiful hues, making some of them sparkle like precious stones.

All stones have a different origin. Some stones, called "sedimentary", are composed of sedimentary rocks. This means that many years ago precipitation was formed as a result of the activity of water, wind, ice, plants and animals. The deposition occurred in layers, therefore such rocks and stones are called "layered". The smallest particles that make up the rocks have a rounded shape, as their sharp edges have been worn off when they move in water flows and under the influence of wind. Sandstone and limestone are typical layered rocks.

Other rocks originated from molten matter deep underground. They were brought to the surface of the earth, some of them fell into cracks in other rocks. Such rocks are called "pyrogenic", or of volcanic origin. These include granite and basalt.

The third type of rocks used to have a different shape and structure (volcanic or layered), but changed under the influence of temperatures or high pressure. They are called "metamorphic", they include marble and quartzites.

Some rocks contain metal minerals along with other impurities. If such minerals are sufficient to produce metal, such a rock is called an "ore".

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75" 4K MicroLED TV 08.01.2019

Samsung has introduced a new TV based on MicroLED technology. Unlike last year's modular 146- or 219-inch versions of The Wall, the new product is a more compact solution that can be conveniently used in typical living rooms.

MicroLED technology is comparable or even better than OLED technology in terms of image quality, but does not require the use of organic compounds. Theoretically, MicroLED technology can produce perfect blacks, as all microscopic LEDs can be turned off individually.

Other benefits include best-in-class image brightness and an incredibly high dynamic range (HDR). At the same time, such panels should not be subject to fading and degradation, which should provide a longer service life compared to OLED panels. Due to the lack of backlighting, MicroLED TVs can be extremely thin.

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