spectrum signature
71Hydrogen line — For hydrogen lines in general, see Hydrogen spectral series. The hydrogen line, 21 centimeter line or HI line refers to the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms. This… …
72Clandestine HUMINT operational techniques — The Clandestine HUMINT page deals with the functions of that discipline, including espionage and active counterintelligence. This page deals with Clandestine HUMINT operational techniques, also called tradecraft . It applies to clandestine… …
73Infrared vision — can be defined as the capability of biological or artificial systems to detect infrared radiation. The terms thermal vision and thermal imaging [ thermal imaging Encarta® World English Dictionary [North American Edition] © (P)2007 Microsoft… …
74Helium — otherusesHelium (He) is a colorless, odorless, tasteless, non toxic, inert monatomic chemical element that heads the noble gas group in the periodic table and whose atomic number is 2. Its boiling and melting points are the lowest among the… …
75Technetium — molybdenum ← technetium → ruthenium Mn ↑ Tc ↓ Re …
76Plasma cosmology — [ Hannes Alfvén suggested that, by scaling laboratory results by a factor of 109, he could extrapolate magnetospheric conditions. Another scaling jump of 109 was required to extrapolate to galactic conditions, and a third jump of 109 was required …
77List of BASIC dialects — This article gives an alphabetical list of BASIC dialects mdash;a flat list of interpreted and compiled variants of the BASIC programming language. The dialects platform(s) (that is, the computer models and operating systems) are given in… …
78Makemake (dwarf planet) — Makemake Makemake as seen by the Hubble Space Telescope Discovery Discovered by …
79Fluxional molecule — Fluxional molecules are molecules that undergo dynamics such that some or all of their atoms interchange between symmetry equivalent positions. Because virtually all molecules are fluxional in some respects, e.g. bond rotations in most organic… …
80Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …
