gamma density

См. также в других словарях:

• Gamma ray burst progenitors — are the types of celestial objects that can emit gamma ray bursts (GRBs). GRBs show an extraordinary degree of diversity. They can last anywhere from a fraction of a second to many minutes. Bursts could have a single profile or oscillate wildly… …   Wikipedia

• Gamma ray burst emission mechanisms — are theories that explain how the energy from a gamma ray burst progenitor (regardless of the actual nature of the progenitor) is turned into radiation. These mechanisms are a major topic of research as of 2007. Neither the light curves nor the… …   Wikipedia

• Gamma ray — Gamma rays (denoted as gamma;) are a form of electromagnetic radiation or light emission of frequencies produced by sub atomic particle interactions, such as electron positron annihilation or radioactive decay. Gamma rays are generally… …   Wikipedia

• Gamma correction — Gamma correction, gamma nonlinearity, gamma encoding, or often simply gamma, is the name of a nonlinear operation used to code and decode luminance or tristimulus values in video or still image systems. [cite book | title = Digital Video and HDTV …   Wikipedia

• Density logging — Well logging Gamma ray logging Spontaneous potential logging Resistivity logging Density logging Sonic logging Caliper logging Mud logging LWD/MWD v · …   Wikipedia

• density log — n, = gamma gamma log measures electron density within lithologic units which is related to their bulk density. The wireline tool records the intensity of gamma radiation (in counts per second) from a nuclear source within the tool after it has… …   Coke&Coal Terminology

• Gamma camera — A gamma camera is a device used to image gamma radiation emitting radioisotopes, a technique known as scintigraphy. The applications of scintigraphy include early drug development and nuclear medical imaging to view and analyse images of the… …   Wikipedia

• Gamma-aminobutyric acid — Chembox new ImageFile=Gamma Aminobuttersäure gamma aminobutyric acid.svg ImageSize=230 ImageFile2=GABA3d.png IUPACName=4 aminobutanoic acid OtherNames= Section1= Chembox Identifiers CASNo=56 12 2 PubChem=119 ChemSpiderID = 116 SMILES=C(CC(=O)O)CN …   Wikipedia

• gamma — 1. Third letter of the Greek alphabet, γ. 2. A unit of magnetic field intensity equal to 10−9 T. [G.] * * * gam·ma gam ə n 1) the third letter of the Greek alphabet symbol Gamma or gamma 2) a unit of magnetic flux density equal to one nanotesla… …   Medical dictionary

• Density functional theory — Electronic structure methods Tight binding Nearly free electron model Hartree–Fock method Modern valence bond Generalized valence bond Møller–Plesset perturbation theory …   Wikipedia

• Gamma-Butyrolactone — Chembox new Name = gamma Butyrolactone ImageFile1 = GBL chemical structure.png ImageName1 = ImageFile2 = GBL from xtal 3D balls.png ImageSize2 = 200px IUPACName = Dihydrofuran 2(3H) one OtherNames = GBL, butyrolactone, 1,4 lactone, 4… …   Wikipedia