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WINGED WORDS, PHRASEOLOGICAL UNITS
Directory / Winged words, phraseological units / Pull the wool over someone's eyes

Winged words, phraseological units. Meaning, history of origin, examples of use

Winged words, phraseological units

Directory / Winged words, phraseological units

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Throw dust in the eyes

Proverbs and sayings
Proverbs and sayings

Phraseologism: Pull the wool over someone's eyes.

Meaning: Deceive.

Origin: The expression appeared in the 1726th century. Now it is used in the sense of "creating a false impression of one's capabilities." However, the original meaning is different: during fisticuffs, dishonest fighters took with them bags of sand, which they threw into the eyes of their opponents. In XNUMX, this technique was banned by a special decree.

Random phraseology:

Pillars of society.

Meaning:

About people who occupy a high position in society and because of this supposedly keep its morals and traditions.

Origin:

From Norwegian: Samfundets stotter. The title of a play (1877) by the Norwegian playwright Henrik Ibsen (1828-1906), in which the author depicts wealthy and respected citizens of a small provincial town in Norway, outwardly respectable, but internally defective.

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A crystal has been created that refracts light better than all substances 02.07.2018

A team of scientists and engineers led by the University of Wisconsin-Madison and the University of Southern California (USA) has created a crystal that has a higher degree of optical anisotropy than all other solids on Earth, especially for infrared light.

To better understand what optical anisotropy is, place a piece of transparent Icelandic spar (a mineral, a type of calcite) over an image, and you will see that the image is doubled. This is due to a phenomenon called double refraction. In this property, optical anisotropy is manifested - the difference in the optical properties of the medium depending on the direction of propagation of light in it, as well as on the polarization of this light. Light waves in the same beam passing through a material with optical anisotropy will be slowed down more or less depending on the polarization - a measure of the direction in which the light waves vibrate. The human eye cannot detect polarization, but the ability to change the vibrational orientation of light is essential for LCD screens, 3D movies, lasers, and filters for camera and video camera lenses. Most devices that change the polarization of light are based on materials with optical anisotropy.

A mineral such as Icelandic spar has a well-pronounced birefringence, however, in a new crystal created by American scientists, this property manifests itself much better. And much better than any other substance on Earth - about 50-100 times, for the infrared range. This impressive ability comes from the unique molecular structure of the crystal, which consists of long chains of atoms arranged in parallel rows. Using advanced computational techniques, the researchers selected a number of necessary atoms, grew them in the lab, and studied them carefully.

The new material has a high potential due to its properties. It can be useful in energy saving photovoltaic cells or light emitting diodes. In the future, the scientists plan to explore other properties of the new crystal, and they are also working on developing strategies for synthesizing the material in large quantities.

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