Friday, January 30, 2009
Neon sign is a colorless, odorless gas which was discovered by two British Chemists, whose names are Sir William Ramsay and Morris W. Travers. Neon sign can be seen from great distances because it has an amazing glowing light. It is mostly used in airplane beacons, lamps and in advertising signs. Neon signs which you see in theatres or restaurants are made with the help of glass tubes which are shaped into letters, numbers, words, triangles, circles etc and are finally filled with neon gas. It is not that easy to make Neon gas. When air is turned to liquid under high pressure with temperatures of about -200°C, neon is produced. Liquid that is left behind is a gas, named Neon. Neon gas is very costly but if a few drops are added in the tube it can create bright light. Only one quart of neon gas can light upto 200 to 300 feet of glass tubing. Neon signs are attached to high voltage transformer that charges the electrode on one end of a tube with a positive charge and the electrode on the other end with a negative charge. Positive and negative electrical charges are attracted to one another, and in this instance they rely on the neon atoms to reach one another. An electrical charge is build when neon gas establishes a connection between the electrodes. When this electrical charge gets in touch with neon atoms, electrons vary speed, due to which a photon is released. It is the photon that emits what we refer to as Neon Light.
posted by myneonhaven
@ 2:15 AMpermanent link |
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