ruby cavity

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• Ruby (elephant) — Ruby was a 4.5 ton Asian elephant who lived most of her short life at the Phoenix Zoo. She became famous for her paintings, which raised money for elephant care at the zoo.Ruby was born in Thailand, probably in the summer of 1973. She was shipped …   Wikipedia

• Ruby laser — A ruby laser is a solid state laser that uses a synthetic ruby crystal as its gain medium. It was the first type of laser invented, and was first operated by Theodore H. Ted Maiman [Maiman, T.H. (1960) Stimulated Optical Radiation in Ruby .… …   Wikipedia

• laser — /lay zeuhr/, n. Physics. a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms to a higher energy level and causing them to radiate their energy in phase. Also called optical maser. [1955 60; …   Universalium

• Laser — For other uses, see Laser (disambiguation). United States Air Force laser experiment …   Wikipedia

• Q-switching — Q switching, sometimes known as giant pulse formation, is a technique by which a laser can be made to produce a pulsed output beam. The technique allows the production of light pulses with extremely high (gigawatt) peak power, much higher than… …   Wikipedia

• Casting (metalworking) — Casting iron in a sand mold In metalworking, casting involves pouring liquid metal into a mold, which contains a hollow cavity of the desired shape, and then allowing it to cool and solidify. The solidified part is also known as a casting, which… …   Wikipedia

• Optical amplifier — An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from… …   Wikipedia

• List of Deltora Quest characters — The Deltora series features a wide line of characters, both important and minor. The series also features many different monsters and creatures that appeared in all of the many different books. This article is a list of the many different… …   Wikipedia

• Characters in the Deltora Quest series — The Deltora series features a wide line of characters, both important and minor. The series also features many different monsters and creatures that appeared in all of the many different books. This article is a list of the many different… …   Wikipedia

• Saguaro — This article is about the cactus. For the Palm OS software, see Saguaro (Palm OS). For the baseball team, see Surprise Saguaros. Saguaro Scientific classification Kingdom …   Wikipedia

• Agate — For other uses, see Agate (disambiguation). Agate Banded agate (agate like onyx); the specimen is 2.5 cm (1 inch) wide General Category …   Wikipedia