Ruby laser weaknesses in the lining. Ruby lasers were used extensively in tattoo and hair removal, but are being replaced by alexandrite and s in this application. The ruby laser was the first laser to be made functional. Built by Theodore Maiman in 1960, the device was created out of the concept of an "optical maser," a maser that could operate in the visual or infrared regions of the spectrum. In 1958, after the inventor of the maser, Charles Townes, and his colleague, Arthur Schawlow, published an article in the "Physical Review" regarding the idea of optical masers, the race to build
Laser tag tag facilities. Competitions and tournaments are staged for local, regional/state, inter-regional, national, bi-lateral international, and international levels. The First Zone Worlds Laser Tag Championships were hosted in the United States. Ultrazone's San Diego site in California hosted Worlds I from 2–7 August 2003. Worlds I featured 12 teams from Sweden, Finland, Canada and the United States. The tournament was played on v5 equipment and took place between 11pm to 6am. Results: The Second Zone World Laser Tag Championships were staged at Megazone in Tampere, Finland during 30 May – 4 June 2009, with teams including Australia, Sweden, U.S., and the