atomic region
11F region — The F region of the ionosphere is home to the F layer of ionization, also called the Appleton layer , after the English physicist Edward Appleton. As with other ionospheric sectors, layer implies a concentration of plasma, while region is the… …
12Photoconductive atomic force microscopy — (pc AFM) is a scientific technique.. Multi layer photovoltaic cells have gained popularity since mid 1980s.[1] At the time, research was primarily focused on single layer photovoltaic (PV) devices between two electrodes, in which PV properties… …
13Shippingport Atomic Power Station — Infobox NPP Picture=Shippingport Reactor.jpg Pic des=The Shippingport reactor was the first full scale PWR nuclear power plant in the United States Status=D Utility=Duquesne Light Company Location=Beaver County, Pennsylvania Supplier=… …
14Bettis Atomic Power Laboratory — is a U.S. Government owned, contractor operated research and development facility located in West Mifflin, Pennsylvania. It solely focuses on the design and development of nuclear power for the U.S. Navy. The laboratory, founded in 1949 and… …
15Chūgoku region — Chugoku region, Japan. The Chūgoku region (中国地方, Chūgoku chihō …
16H II region — An H II region (also known as emission nebula) is a cloud of glowing gas and plasma, sometimes several hundred light years across, in which star formation is taking place. Young, hot, blue stars which have formed from the gas emit copious amounts …
17H I region — An H I region is an interstellar cloud composed of neutral atomic hydrogen (H I). These regions are non luminous, save for emission of the 21 cm (1,420 MHz) region spectral line. This line has a very low transition probability, so requires large… …
18transition element — Chem. any element in any of the series of elements with atomic numbers 21 29, 39 47, 57 79, and 89 107, that in a given inner orbital has less than a full quota of electrons. Also called transition metal. [1920 25] * * * Any chemical element with …
19international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …
20spectroscopy — 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… …
