molecular bands

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• Molecular electronic transition — Molecular electronic transitions take place when electrons in a molecule are excited from one energy level to a higher energy level. The energy change associated with this transition provides information on the structure of a molecule and… …   Wikipedia

• Molecular biology — (pronounced /məˈlɛkjʊlər .../) is the branch of biology that deals with the molecular basis of biological activity. This field overlaps with other areas of biology and chemistry, particularly genetics and biochemistry. Molecular biology… …   Wikipedia

• Molecular radiation — results from the rotational, vibrational, and electronic energy transitions of molecules. Spectral bands are the combination of many different spectral lines resulting from vibrational, rotational and electronic transitions. Unresolved band… …   Wikipedia

• Molecular orbital diagram — A molecular orbital diagram, or MO diagram for short, is a qualitative descriptive tool explaining chemical bonding in molecules in terms of molecular orbital theory in general and the Linear combination of atomic orbitals molecular orbital… …   Wikipedia

• Molecular orbital — See also: Molecular orbital theory In chemistry, a molecular orbital (or MO) is a mathematical function describing the wave like behavior of an electron in a molecule. This function can be used to calculate chemical and physical properties such… …   Wikipedia

• Molecular vibration — A molecular vibration occurs when atoms in a molecule are in periodic motion while the molecule as a whole has constant translational and rotational motion. The frequency of the periodic motion is known as a vibration frequency, and the typical… …   Wikipedia

• Molecular Biology Core Facilities (MBCF) — Coordinates: 42°20′47″N 71°06′07″W / 42.346397°N 71.101853°W / 42.346397; 71.101853 The Molecular Biology Core Facil …   Wikipedia

• molecular spectrum — noun : a spectrum of radiation due to electron transitions and other quantum energy changes within molecules and consisting of series of characteristic spectrum bands which are found upon high dispersion to be made up of very fine lines * * *… …   Useful english dictionary

• Spectral bands — are part of optical spectra of polyatomic systems, including condensed materials, large molecules etc. Each line corresponding to one level in atom splits in molecules. When the number of atoms is large, one gets continuum of energy levels, so… …   Wikipedia

• comet — cometary /kom i ter ee/, cometic /keuh met ik/, cometical, adj. cometlike, adj. /kom it/, n. Astron. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and… …   Universalium

• Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… …   Wikipedia