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The Ellis wormhole is the special case of the Ellis drainhole in which the 'ether' is not flowing and there is no gravity. What remains is a pure traversable wormhole comprising a pair of identical twin, nonflat, three-dimensional regions joined at a two-sphere, the 'throat' of the wormhole
Diethyl ether, or simply ether, is an organic compound with the chemical formula (CH 3 CH 2) 2 O, sometimes abbreviated as Et 2 O. [ a ] It is a colourless, highly volatile , sweet-smelling ("ethereal odour"), extremely flammable liquid .
The Ellis drainhole is the earliest-known complete mathematical model of a traversable wormhole.It is a static, spherically symmetric solution of the Einstein vacuum field equations augmented by inclusion of a scalar field minimally coupled to the geometry of space-time with coupling polarity opposite to the orthodox polarity (negative instead of positive):
Petroleum ether is the petroleum fraction consisting of aliphatic hydrocarbons and boiling in the range 35–60 °C, and commonly used as a laboratory solvent. [4] Despite the name, petroleum ether is not an ether ; the term is used only figuratively, signifying extreme lightness and volatility.
In Chinese history, the alchemical practice of concocting elixirs of immortality from metallic and mineral substances began circa the 4th century BCE in the late Warring states period, reached a peak in the 9th century CE Tang dynasty when five emperors died, and, despite common knowledge of the dangers, elixir poisoning continued until the 18th century Qing dynasty.
Ether Day, or The First Operation Under Ether (Robert C. Hinckley, 1882–1893) is on display at UMass Chan Medical School's Lamar Soutter library. Painter Robert Cutler Hinckley meticulously researched the event, particularly who was present and participating, for his The First Operation with Ether (1882–1893). He interviewed various Boston ...
2,5-Furandicarboxylic acid (FDCA) is an organic chemical compound consisting of two carboxylic acid groups attached to a central furan ring. It was first reported as dehydromucic acid by Rudolph Fittig and Heinzelmann in 1876, who produced it via the action of concentrated hydrobromic acid upon mucic acid. [2]
Ether (ETH) is the cryptocurrency generated in accordance with the Ethereum protocol as a reward to validators in a proof-of-stake system for adding blocks to the blockchain. Ether is represented in the state as an unsigned integer associated with each account, this being the account's ETH balance denominated in wei (10 18 wei = 1 ether).