Talking about many things is difficult, and sometimes dangerous. Meaning, origin, examples of the use of phraseological units

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

Winged words, phraseological units

Directory / Winged words, phraseological units

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Talking about many things is difficult, and sometimes dangerous.

Benediktov V.G.

Phraseologism: Talking about many things is difficult, and sometimes dangerous.

Meaning: It is cited as an excuse-apology for the unwillingness to speak on unpleasant, dangerous topics for the speaker (jokingly ironic).

Origin: From the poem "Questions" by the poet Vladimir Grigorievich Benediktov (1807-1873).

Random phraseology:

Regional emergency.

Meaning:

A major event of local importance (iron.).

Origin:

The title of the story (1985) by the writer Yuri Polyakov.

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A method has been found for significantly increasing the forces of optical interaction 19.10.2017

It is known that light is a stream of photons. And if two light guides, fiber optic conductors, for example, are located in close proximity to each other, then the movement of photons makes these light guides attract or repel each other. This influence of conductors arises from the so-called optical interaction forces, but their effect is extremely weak in order to be used in practice.

Physicists from the Chalmers University of Technology and the Free University of Brussels have found a method to significantly increase the optical power. This method opens up a lot of opportunities for scientists in the field of nanotechnology, in the development of new optoelectronic devices and sensors.

In order to make light behave in a completely new way, scientists have developed light guides made of artificial material, the structure of which allows them to "trick" photons. The structure of this material forces all the photons of the light stream to shift and move, concentrating only near one side of the waveguide. When photons moving in a neighboring waveguide do the same, then at a certain mutual arrangement of the waveguides, the interaction force between them increases by a factor of 10.

"Photons usually don't care which part of the waveguide they are traveling on," says Philippe Tassin, a professor at Chalmers University of Technology. ".

An increase in the concentration of photons at the edge of a waveguide and an increase in the interaction forces between waveguides can be used to create tiny nanomotors. Such nanomotors, powered by light energy, can provide the work of nanomechanisms that perform various jobs, sorting living cells and nanoparticles, for example, and nanorobots operating directly inside the human body.

"The photon concentration method opens up new possibilities for using waveguides as the 'artificial muscles' of tiny machines," says Vincent Ginis, a scientist at the Free University of Brussels. drastically change the principles of light behavior and its basic parameters. And, I hope, we will be able to find many more applications for light, "altered" by the materials through which it moves at a given time."

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