gas-discharge plasma
61Helium — otherusesHelium (He) is a colorless, odorless, tasteless, non toxic, inert monatomic chemical element that heads the noble gas group in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the… …
62Spark-gap transmitter — A spark gap transmitter is a device for generating radio frequency electromagnetic waves. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887 ndash;1916) and the first… …
63Neon lamp — See also: Neon lighting A General electric NE 34 glow lamp, manufactured circa 1930. A neon lamp (also neon glow lamp) is a miniature gas discharge lamp that typically contains neon gas at a low pressure in a glass capsule. Only a thin region… …
64Corona treatment — of webs is widely used in the printing, coating and laminating processes to improve adhesion. Corona treatment (sometimes referred to as air plasma)is a surface modification technique that uses a low temperature corona discharge plasma to impart… …
65Crackle tube — A small battery powered Luminglas device, turned on. A small battery powered Luminglas device, turned …
66Pseudospark switch — The pseudospark switch, also known as a cold cathode thyratron due to the similarities with regular thyratrons, is a gas filled tube capable of high speed switching. Advantages of pseudospark switches include the ability to carry reverse currents …
67Crookes tube — A Crookes tube. The electrons travel in straight lines from the cathode on the left, shown by the shadow cast by the cross on the fluorescence on the righthand wall. The anode is at the bottom. A Crookes tube is an early experimental electrical… …
68Laser — For other uses, see Laser (disambiguation). United States Air Force laser experiment …
69Nikola Tesla — Tesla, aged 37, 1893, photo by Sar …
70Arthur Maitland — was born on the 7th December 1928 in Blackburn, England. He gained his BSc Physics degree in 1956 as a part time student studying for a London University External Degree. In 1972 St Andrews University, whom he was employed as a researcher and… …
