Gamma ray

Gamma ray
Gamma ray Gam"ma ray n. (Physics) A very penetrating electromagnetic ray not appreciably deflected by a magnetic or electric field, emitted by radioactive substances. Gamma rays are photons of electromagnetic radiation having a wavelength shorter than that of X-rays, (i. e. shorter than 0.1 nanometer) and are correspondingly more penetrating than X-rays. In addition to being given off in certain types of radioactive decay, they may be found in cosmic radiation, though they are largely absorbed by the earth's atmosphere. Gamma-ray detectors orbited above the atmosphere have found bursts of gamma radiation, in some cases associated with visually observed supernova explosions, but in most cases from unidentified sources. [Webster 1913 Suppl. +PJC]

The Collaborative International Dictionary of English. 2000.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • 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 Ray — Gamma Ray …   Википедия

  • Gamma Ray — al finalizar un concierto en Barcelona, en la gira Majestic European Tour Datos generales Origen Hamburgo …   Wikipedia Español

  • Gamma Ray — Le groupe Gamma Ray à la fin d un concert à Barcelone Pays d’origine …   Wikipédia en Français

  • Gamma Ray — Gamma Ray …   Deutsch Wikipedia

  • Gamma Ray — es un grupo de Power Metal. En el año 1989, tras pasar 4 años en Helloween, el compositor y guitarrista alemán Kai Hansen se va de la banda. Luego de un par de apariciones en los primeros discos de Blind Guardian se decide por fromar un proyecto… …   Enciclopedia Universal

  • gamma ray — n [C usually plural] a beam of light with a short ↑wavelength, that can pass through solid objects >.gamma radi ation n [U] …   Dictionary of contemporary English

  • gamma ray — n. 1. electromagnetic radiation having a wavelength of 10 9 centimeters or less: may be produced by the reactions of nuclei or elementary particles or by the interaction of high energy electrons with matter 2. a stream of gamma rays …   English World dictionary

  • gamma ray — n a photon emitted spontaneously by a radioactive substance also a high energy photon usu. used in pl …   Medical dictionary

  • gamma ray — Physics. 1. a photon of penetrating electromagnetic radiation (gamma radiation) emitted from an atomic nucleus. 2. a photon emitted by an electron as a result of internal conversion. 3. electromagnetic radiation with wavelengths shorter than… …   Universalium

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”