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An electron-withdrawing group (EWG) is a group or atom that has the ability to draw electron density toward itself and away from other adjacent atoms. [1] This electron density transfer is often achieved by resonance or inductive effects.
The betatron was the first machine capable of producing electron beams at energies higher than could be achieved with a simple electron gun, and the first circular accelerator in which particles orbited at a constant radius. [1] The concept of the betatron had been proposed as early as 1922 by Joseph Slepian. [2]
A simple machine is a mechanical device that changes the direction or magnitude of a force. [1] In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. [2] Usually the term refers to the six classical simple machines that were defined by Renaissance scientists: [3] [4 ...
A diagram of a Rhodotron. The electron beam is in red. E is the electron gun, L is an electron lens, C is the radiofrequency cavity, and M is a bending magnet. A Rhodotron is an industrial electron accelerator first proposed in 1987 by J. Pottier of the French Atomic Energy Agency (CEA), [34] manufactured by Belgian company Ion Beam ...
The family of a 20-year-old man is speaking out after he was found dead at the bottom of a hotel elevator shaft in Turkey while reportedly on his first vacation with his girlfriend.
President Joe Biden is commuting the sentences of nearly 1,500 people and pardoning 39 others in "the largest single-day act of clemency in modern history," the White House announced Thursday. The ...
(The Center Square) – President-elect Donald Trump blasted federal “work from home” policies Monday, calling them “ridiculous” and stirring up pushback from federal employee unions.
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