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101Formation evaluation gamma ray — In the field of formation evaluation, gamma ray log records natural radioactivity emission of formation. Measurement of natural emission of gamma rays in oil and gas wells are particularly helpful because shales and sandstones typically have… …
102Coal power in the United States — Sources of electricity in the U.S. in 2009.[1] See also: Coal mining in the United States …
103Climate change in Washington — Main article: Climate change in the United States Digitally colored elevation map of Washington. Climate change in the American state of Washington is a subject of study and projection today. Contents …
104Planck constant — Planck s relation redirects here. For the law governing black body radiation, see Planck s law. Values of h Units 6.62606957(29)×10−34 J·s[1] 4.135 …
105astronomy — /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,… …
106climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …
107synchrotron radiation — electromagnetic radiation emitted by charged particles as they pass through magnetic fields. [1960 65] * * * Electromagnetic radiation emitted by charged particles that are moving at speeds close to that of light when their paths are altered. It… …
108Chlorophyll fluorescence — is light that has been re emitted after being absorbed by chlorophyll molecules of plant leaves. By measuring the intensity and nature of this fluorescence, plant ecophysiology can be investigated. Contents 1 Assessing plant physiology with… …
109CNO cycle — Overview of the CNO I Cycle. The CNO cycle (for carbon–nitrogen–oxygen) is one of two sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton–proton chain. Unlike the proton–proton chain reaction, the CNO… …
110Corona — This article is about the astronomical term. For other uses, see Corona (disambiguation). During a total solar eclipse, the solar corona can be seen with the naked eye. A corona is a type of plasma atmosphere of the Sun or other celestial body,… …
