| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,764,829,412 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
gamma ray |
Also found in: Medical, Wikipedia | 0.02 sec. |
gamma rayPenetrating very short-wavelength electromagnetic radiation, similar to an X-ray but of higher energy, that is emitted spontaneously by some radioactive substances (see gamma decay; radioactivity). Gamma radiation also originates in the decay of certain subatomic particles and in particle-antiparticle annihilation (see also antimatter). Gamma rays can initiate nuclear fission, can be absorbed by ejection of an electron (see photoelectric effect), and can be scattered by free electrons (see Compton effect). gamma ray [′gam·ə ‚rā] (nuclear physics) A high-energy photon, especially as emitted by a nucleus in a transition between two energy levels. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | ||
|---|---|---|---|
| The image is formed by a computer synthesis of data that is transmitted by single gamma photons emitted by radionuclides administered to the patient. The image is formed by a computer synthesis of data that is transmitted by single gamma photons emitted by radionuclides administered to the patient. The image is formed by a computer synthesis of data that is transmitted by single gamma photons emitted by radionuclides administered to the patient. |
| Encyclopedia |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|