gamma ray test
71spectroscopy — 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… …
72Positron emission tomography — (PET) is a nuclear medicine imaging technique which produces a three dimensional image or map of functional processes in the body. The system detects pairs of gamma rays emitted indirectly by a positron emitting radionuclide (tracer), which is… …
73Tests of general relativity — General relativity Introduction Mathematical formulation Resources Fundamental concepts …
74Vela (satellite) — Vela Vela 5A/B dans une salle blanche, A et B sont séparés après le lancement Caractéristiques Organisation …
75Nuclear fission — For the generation of electrical power by fission, see Nuclear power. Splitting the atom redirects here. For the EP, see Splitting the Atom. Nuclear physics Radioactive decay Nuclear fission Nuclear fusio …
76Effects of nuclear explosions — An American nuclear test. Nuclear weapons …
77Nuclear Spectroscopic Telescope Array — NuSTAR Vue d artiste du télescope NuSTAR Caractéristiques Organisation NASA …
78SWIFT (télescope spatial) — Pour les articles homonymes, voir Swift. Swift …
79analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …
80Background radiation — This article is about ionizing radiation. For microwave background radiation from space, see Cosmic background radiation and cosmic background. Thermal radiation emitted by Earth is not considered in this category because it is not ionizing.… …
