Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
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 Interferometer Space Antenna — For other uses of this acronym, see LISA (disambiguation). Laser Interferometer Space Antenna Artist s conception of LISA spacecraft Operator ESA, NASA Satellite of Sun The Laser Interfe … Wikipedia
Laser — For other uses, see Laser (disambiguation). United States Air Force laser experiment … Wikipedia
Earth and Space Sciences — ▪ 1996 Introduction GEOLOGY AND GEOCHEMISTRY In 1995 significant developments took place in the realm of geologic mapping, which provides the foundation for the presentation and comparison of data in the Earth sciences. The most important… … Universalium
Earth technology in Stargate — In the Stargate fictional universe, the humans of Earth have developed many advanced technologies based on what SG teams have brought back from trips to other planets through the Stargate. Earth has also benefitted from technical knowledge… … Wikipedia
Earth and Moon — Tidal effectsThe tides on Earth are mostly generated by the Moon s gravitation, with a less significant contribution by the Sun. These gravitational effects are specifically manifested as tidal forces. The combination of the two is responsible… … Wikipedia
Structure of the Earth — Earth cutaway from core to exosphere. Left picture is not to scale. The interior structure of the Earth, similar to the outer, is layered. These layers can be defined by either their chemical or their rheological properties. The Earth has an… … Wikipedia
Fiber laser — A fiber laser or fibre laser is a laser in which the active gain medium is an optical fiber doped with rare earth elements such as erbium, ytterbium, neodymium, dysprosium, praseodymium, and thulium. They are related to doped fiber amplifiers,… … Wikipedia
Active laser medium — The active laser medium or gain medium is the source of optical gain within a laser. The gain results from the stimulated emission of electronic or molecular transitions to a lower energy state from a higher energy statepreviously populated by a… … Wikipedia
Early Earth Federation mobile suits in the Gundam universe — Mobile suits (機動兵器) are fictional weapon systems from the Gundam anime metaseries. The following is a list of all early mobile suits from the Earth Federation.MSZ 010 ZZ GundamThe MSZ 010 ΖΖ Gundam is about a fictional weapon from the Universal… … Wikipedia