population of rotational level
81Nitrogen laser — A 337nm wavelength and 170 µJ pulse energy 20 Hz cartridge nitrogen laser A nitrogen laser is a gas laser operating in the ultraviolet range[1] (typically 337.1 nm) using molecular nitrogen as its gain medium, pumped by an electrical… …
82Pallamallawa, New South Wales — Pallamallawa is a small rural village located approximately 35 kilometers from Moree, in Northwestern New South Wales, Australia. It is situated on the banks of the Gwydir River, a few kilometers off the main Gwydir Highway between Inverell and… …
83astronomy — /euh stron euh mee/, n. the science that deals with the material universe beyond the earth s atmosphere. [1175 1225; ME astronomie ( < AF) < L astronomia < Gk. See ASTRO , NOMY] * * * I Science dealing with the origin, evolution, composition,… …
84dam — dam1 /dam/, n., v., dammed, damming. n. 1. a barrier to obstruct the flow of water, esp. one of earth, masonry, etc., built across a stream or river. 2. a body of water confined by a dam. 3. any barrier resembling a dam. v.t. 4. to furnish with a …
85Dam — /dam, dahm/, n. (Carl Peter) Henrik /kahrl pee ter hen rik/; Dan. /kahrddl pay teuhrdd hen rddik/, 1895 1976, Danish biochemist: Nobel prize for medicine 1943. * * * I Barrier built across a stream, river, or estuary to conserve water for such… …
86Cosmic microwave background radiation — CMB and Cosmic background radiation redirect here. For other uses see CMB (disambiguation) and Cosmic background (disambiguation). Physical cosmology …
87Running — Runner redirects here. For other uses, see Runner (disambiguation). This article is about the type of locomotion in humans. For running in horses, see Horse gait. For locomotion in dogs, see Gait (dog). For general locomotion, see Gait. For other …
88Poland in Antiquity — Peoples belonging to numerous archeological cultures identified with Celtic, Germanic and Baltic tribes lived in various parts of Poland from about 400 BC. Other groups were no doubt also present, as ethnic composition of archeological cultures… …
89History of the Earth — For the history of modern humans, see History of the world. Geological time put in a diagram called a geological clock, showing the relative lengths of the eons of the Earth s history The history of the Earth describes the most important events… …
90Manhattan Project — This article is about the atomic bomb project. For other uses, see Manhattan Project (disambiguation). Manhattan District The Manhattan Project created the first nuclear bombs. The Trinity test …
