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A halogen lamp (also called tungsten halogen, quartz-halogen, and quartz iodine lamp) is an incandescent lamp consisting of a tungsten filament sealed in a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen, such as iodine or bromine. The combination of the halogen gas and the tungsten ...
A thyratron is a type of gas-filled tube used as a high-power electrical switch and controlled rectifier. Thyratrons can handle much greater currents than similar hard-vacuum tubes. Electron multiplication occurs when the gas becomes ionized, producing a phenomenon known as a Townsend discharge. Gases used include mercury vapor, xenon, neon ...
The Purple Gang, also known as the Sugar House Gang, was a criminal mob of bootleggers and hijackers composed predominantly of Jewish gangsters. They operated in Detroit, Michigan, during the 1920s of the Prohibition era and came to be Detroit's dominant criminal gang. Excessive violence and infighting caused the gang to destroy itself in the ...
The types of weapons employed ranged from disabling chemicals, such as tear gas, to lethal agents like phosgene, chlorine, and mustard gas. These chemical weapons caused medical problems. [3] This chemical warfare was a major component of the first global war and first total war of the 20th century.
Charoite. 2O is a rare silicate mineral, first described in 1978. It is named after the Chara River, despite its being 70 km away from the discovery place; the name of the river translated from Evenki means “to melt, melt.”. [6] [3] When it was discovered, it was thought to be a fake, dyed purple to give it its striking appearance.
Sudarsky's classification of gas giants for the purpose of predicting their appearance based on their temperature was outlined by David Sudarsky and colleagues in the paper Albedo and Reflection Spectra of Extrasolar Giant Planets [1] and expanded on in Theoretical Spectra and Atmospheres of Extrasolar Giant Planets, [2] published before any ...
The purple sulfur bacteria (PSB) are part of a group of Pseudomonadota capable of photosynthesis, collectively referred to as purple bacteria. They are anaerobic or microaerophilic, and are often found in stratified water environments including hot springs, stagnant water bodies, as well as microbial mats in intertidal zones.
Deep Purple are an English rock band formed in London in 1968. [1] They are considered to be among the pioneers of heavy metal and modern hard rock, [2] [3] although their musical style has varied throughout their career. [4] Originally formed as a psychedelic rock and progressive rock band, they shifted to a heavier sound with their 1970 album ...