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Winged words, phraseological units. Meaning, history of origin, examples of use
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Moloch
Bible
Phraseologism: Moloch.
Meaning: A symbol of cruel and unreasoning power, requiring huge sacrifices (human lives, time, effort, etc.).
Origin: From the Bible. Repeatedly found in the books of the Old Testament (Leviticus, 18:21, 20:2, 4th Book of Kings, 23:10). Moloch is the name of the deity worshiped by the ancient biblical people of the Canaanites. It is described as a kind of copper idol with a bull's head, to which human sacrifices were made. Hence the expression - "Moloch of war".
Random phraseology:
Everything flows, everything changes.
Meaning:
There is nothing permanent.
Origin:
It is believed that the words of the ancient Greek philosopher Heraclitus from Ephesus (c. 554-483 BC) served as its primary source, which were preserved in one of the dialogues of the philosopher Plato and became the primary source for another phraseological unit - "you cannot enter the same the same river", this popular expression is used about the constant and inevitable changes in the life of a person and society. |
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| Random news from the Archive Gold red and green
09.11.2012
Scientists from the University of Southampton have found that microscopic manipulation of the surface structure of gold can change its color.
It turns out that thanks to milling using a focused ion beam on the metal surface, it is possible to create nanoscale patterns that have the properties of metamaterials. Scientists managed to form a special pattern on a gold substrate, which changed the reflective properties of gold and visually changed its color. Thus, it is now possible to create red and even green gold. Moreover, this technology is applicable to other metals such as silver and aluminum. This is a completely new approach to painting metals, which does not require the use of carcinogenic dyes.
The pattern on the surface of the metal is only 100 nanometers deep. By selecting a certain depth and pattern of milling, you can control which wavelengths of light the metal absorbs and which reflects. As a result, one metal part can be "painted" in different colors, and with an accuracy that is unattainable with conventional paint. In particular, a silver ring can be decorated with the thinnest stripes of red and green.
Ion beam milling is kind of like sandblasting, but at the atomic level. This technology is well mastered, although it is extremely difficult to paint with it, for example, the skin of a ship. However, it can be used in jewelry and other areas where the creation of surfaces with complex optical properties is required, in particular in promotional items and protected trademarks.
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