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Glow sticks were originally invented by the US Military, [15] and are an essential part of military operations across land and sea, where they are more often referred to as chem lights. Glow sticks are also used within police tactical units, as light sources during night operations or close-quarters combat in dark areas. They are also used to ...
Neon lights were named for neon, a noble gas which gives off a popular orange light, but other gases and chemicals called phosphors are used to produce other colors, such as hydrogen (purple-red), helium (yellow or pink), carbon dioxide (white), and mercury (blue). Neon tubes can be fabricated in curving artistic shapes, to form letters or ...
A General Electric NE-34 glow lamp, manufactured circa 1930. Neon was discovered in 1898 by William Ramsay and Morris Travers.The characteristic, brilliant red color that is emitted by gaseous neon when excited electrically was noted immediately; Travers later wrote, "the blaze of crimson light from the tube told its own story and was a sight to dwell upon and never forget."
The compositor takes the pieces of type from the boxes (compartments) of the type case and places them in the composing stick, working from left to right and placing the letters upside-down with the nick to the top. Early composing sticks were made of wood, but later iron, brass, steel, aluminium, pewter and other metals were used. Wooden ...
Glow stick solutions and chalk sticks - preparation for experiment Glowmatography [ 1 ] is a laboratory technique for the separation of dyes present in solutions contained in glow sticks . The chemical components of such solutions can be chromatographically separated into polar and nonpolar components.
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