Who are the plebeians? Detailed answer

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Who are the plebeians? Detailed answer

Big encyclopedia for children and adults

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Who are the plebeians?

This is the lower class of free citizens of Rome, deprived, however, of political rights. By 287 BC. e. legal distinctions between these estates disappeared. In the late Republican era, as well as during the time of the Empire, a person of humble origin began to be called a plebeian.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

What was the American reaction to the 1938 War of the Worlds radio show?

On October 30, 1938, a production of H. G. Wells' novel The War of the Worlds was broadcast in the United States on CBS radio as a parody of a report from the scene. Many listeners did not realize that they were being read a work of fiction, and they called the radio asking if there really was a Martian invasion. The next day, some newspapers wrote about mass panic on the streets of cities and crowds of refugees who left their homes. However, this was a big exaggeration - if numerous calls from individual frightened Americans took place, no mass psychosis was observed.

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New fabric will keep you warm and cool 02.12.2017

Materials scientists from Stanford University in Palo Alto (USA), led by Yi Cui, have developed a fabric that can both warm and cool the human body, thanks to its special structure.

In the past few decades, scientists have already developed "breathable" materials that minimize heat loss from the human body. Cooling is more difficult; one solution is to create a fabric that would block visible light (that is, be opaque), but at the same time would freely transmit infrared (IR) radiation from the body, with which 40-60% of thermal energy is released from it.

Cui and colleagues combined these two approaches. The fabric they created is a kind of "sandwich", in which the role of bread (outer layers) is played by layers woven from polyethylene nanothreads. The "stuffing" is two-layer: one layer is carbon fiber that absorbs (and emits) infrared rays, the other is a copper film, which delays infrared rays only to a small extent.

Thus, putting on clothes made of such a fabric, first one side, then the other, you can either keep warm in the cold or cool in the heat. Tests have shown that the temperature difference that can be achieved is up to 6.5°C. This will already save a lot of energy on heating (summer) and cooling (winter) homes, which in the US takes up to 40% of all home energy costs.

Researchers are confident they will be able to more than double the performance of their insulating/cooling fabric in the near future.

Evelyn Wang, an engineer at the Massachusetts Institute of Technology, calls her Stanford colleagues' paper "fascinating" and their concept "elegant and quite simple."

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