defocused beam

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• laser beam — noun The light emitted by a laser. Depending on whether the laser beam is defocused or focused, the CO2 laser can perform two distinct therapeuteic functions …   Wiktionary

• mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph …   Universalium

• spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …   Universalium

• Space-based solar power — Left: Part of the solar energy is lost on its way through the atmosphere by the effects of reflection and absorption. Right: Space based solar power systems convert sunlight to microwaves outside the atmosphere, avoiding these losses, and the… …   Wikipedia

• Solar power satellite — A solar power satellite, or SPS or Powersat, as originally proposed would be a satellite built in high Earth orbit that uses microwave power transmission to beam solar power to a very large antenna on Earth. Advantages of placing the solar… …   Wikipedia

• Soft tissue laser surgery — Laser surgery offers unique surgical capabilities and significant benefits to both patients and surgeons [D.H. Sliney, S.L. Trokel: Medical lasers and their safe use, ISBN 3 540 97856 9] . In soft tissue laser surgery, interaction of laser light… …   Wikipedia

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• Catadioptric system — A 150 mm aperture catadioptric telescope (Maksutov) A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics). Catadioptric… …   Wikipedia

• Technology in The Hitchhiker's Guide to the Galaxy — The fictional universe of The Hitchhiker s Guide to the Galaxy series by Douglas Adams is a galaxy spanning society of interacting extraterrestrial cultures, so the technological level in the series is highly advanced, though often unreliable.… …   Wikipedia