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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."
Neon tube lighting, which also includes the use of argon and mercury vapor as alternative gases, came to be used primarily for eye-catching signs and advertisements. Neon lighting was relevant to the development of fluorescent lighting, however, as Claude's improved electrode (patented in 1915) overcame "sputtering", a major source of electrode ...
The next major technological innovation in neon lighting and signs was the development of fluorescent tube coatings. [22] Jacques Risler received a French patent in 1926 for these. [5] Neon signs that use an argon/mercury gas mixture emit a good deal of ultraviolet light. When this light is absorbed by a fluorescent coating, preferably inside ...
A neon light art installation in Bangkok The vicinity of Times Square, New York City, has been famous for elaborate lighting displays incorporating neon signs since the 1920s. Piccadilly Circus, London, 1962. Neon lighting consists of brightly glowing, electrified glass tubes or bulbs that contain rarefied neon or other gases.
Neon lamps primarily rely on excitation of gas molecules to emit light; CCFLs use a discharge in mercury vapor to develop ultraviolet light, which in turn causes a fluorescent coating on the inside of the lamp to emit visible light. Cold-cathode fluorescent lamps were used for backlighting of LCDs, for example computer monitors and television ...
Neon tubes may partially burn out, and a conservator may identify the burned out portion of a neon artwork through use of a neon light tester, also known as a test light or voltage tester. This electronic test device is used to determine whether an electric current is running through the equipment being tested.