ether - definition. What is ether
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%ما هو (من)٪ 1 - تعريف

CLASS OF ORGANIC COMPOUNDS CONTAINING OXYGEN CONNECTED TO TWO ORGANYL GROUPS
Organic ether; Ethers; Tertiary ether; Primary ether; Secondary ether; Polyether; Polyethers; Diaryl ether; Ether (chemistry); Oleum dulci vitrioli; Ethers, cyclic; Aryl ether; Ether bond; O-alkylation; Alkoxyalkane; Ether group; Etherification
  • Chemical structure of dioxane
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  • Chemical structure of diethyl ether
  • Chemical structure of dimethoxyethane
  • Chemical structure of dimethyl ether
  • The general structure of an ether.  R and R' represent any [[alkyl]] or [[aryl]] [[substituent]].
  • Chemical structure of ethylene oxide
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  • Chemical structure of THF

ETHER         
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ether         
n. under ether
Ether         
The ether is a hypothetical thing that was invented to explain the phenomena of light. Light is theoretically due to transverse vibrations of the ether. Since the days of Young the conception of the ether has extended, and now light, "radiant heat," and electricity are all treated as phenomena of the ether. Electrical attraction and repulsion are explained by considering them due to local stresses in the ether; magnetic phenomena as due to local whirlpools therein. The ether was originally called the luminiferous ether, but the adjective should now be dropped. Its density is put at 936E-21 that of water, or equal to that of the atmosphere at 210 miles above the earth's surface. Its rigidity is about 1E-9 that of steel (see Ten, Powers of); as a whole it is comparable to an all-pervading jelly, with almost perfect elasticity. The most complete vacuum is filled with ether. All this is a hypothesis, for the ether has never been proved to exist. Whether gravitation will ever be explained by It remains to be seen. [Transcriber's note: The Michelson-Morley experiment in 1887 (five years before this book) cast serious doubt on the ether. In 1905 Einstein explained electromagnetic phenomenon with photons. In 1963 Edward M. Purcell used special relativity to derive the existence of magnetism and radiation.]

ويكيبيديا

Ether

In organic chemistry, ethers are a class of compounds that contain an ether group—an oxygen atom connected to two alkyl or aryl groups. They have the general formula R−O−R′, where R and R′ represent the alkyl or aryl groups. Ethers can again be classified into two varieties: if the alkyl or aryl groups are the same on both sides of the oxygen atom, then it is a simple or symmetrical ether, whereas if they are different, the ethers are called mixed or unsymmetrical ethers. A typical example of the first group is the solvent and anaesthetic diethyl ether, commonly referred to simply as "ether" (CH3−CH2−O−CH2−CH3). Ethers are common in organic chemistry and even more prevalent in biochemistry, as they are common linkages in carbohydrates and lignin.

أمثلة من مجموعة نصية لـ٪ 1
1. With all those bags that vanished into the ether?
2. Sofeks had been bringing the ethyl ether in from abroad.
3. And I can now summon any rare track from the online ether.
4. But the latest demographic acronym to emerge from the marketing ether is scarcely more inviting.
5. Dimethyl ether (DME) DME is a fuel that resembles liquefied gas.