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When was it fashionable among European ladies to wear dresses with fully open breasts? Detailed answer

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When was it fashionable among European ladies to wear dresses with fully open breasts?

In the 15th century, under the influence of the ideas of the Renaissance, a fashion for women's dresses with a fully open chest arose in Europe. Some researchers believe that the mistress of the French king Charles VII Agnes Sorel was the direct culprit of this fashion. The open-breasted cut persisted to varying degrees until the 19th century and was captured by artists in many portraits of ladies from high society. Bare chest, according to the moral principles of that time, was more acceptable than bare legs or shoulders.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

What is Sisyphean labor?

According to Greek mythology, Sisyphus is a man who deceived the gods and death itself. For this, Zeus sentenced him to always drag a stone up the mountain, which then rolled down. This senseless work is called Sisyphean labor.

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Fuel from photosynthesis 29.12.2020

Professor of Energy in the Department of Chemistry and Chemical Biology Daniel Nocera and his colleagues at Harvard University have created two devices - an artificial leaf and a bionic leaf - that use solar energy to produce liquid fuel.

The artificial sheet is a silicon-based solar cell with various catalytic materials attached to both sides. When immersed in water, the device uses the energy of sunlight to split water into oxygen and hydrogen. The bionic leaf, thanks to the bacterium Ralstonia eutropha, absorbs carbon dioxide from the air and combines it with hydrogen, which produces artificial leaves. Liquid fuel is produced by artificial photosynthesis.

The scientist noted that in 2020, researchers replaced the bacterium with Xanthobacter autotrophicus. This allowed the development of a device that combines nitrogen from the air and hydrogen from an artificial leaf to make fertilizer.

He added that artificial photosynthesis is 10 times more efficient than natural. In 2021, the team plans to explore practical ways to expand the technology. In the short term, this will help develop a decentralized energy, food and production structure that is carbon neutral. For example, hydrogen is already being used to fuel some vehicles.

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