cosmic annihilation radiation
1Radiation protection — Radiation protection, sometimes known as radiological protection, is the science of protecting people and the environment from the harmful effects of ionizing radiation, which includes both particle radiation and high energy electromagnetic… …
2Cosmic neutrino background — Physical cosmology Universe · Big Bang …
3annihilation — /euh nuy euh lay sheuhn/, n. 1. the act or an instance of annihilating. 2. the state of being annihilated; extinction; destruction. 3. Physics. a. Also called pair annihilation. the process in which a particle and antiparticle unite, annihilate… …
4radiation — 1. The act or condition of diverging in all directions from a center. 2. The sending forth of light, short radio waves, ultraviolet or x rays, or any other rays for treatment or diagnosis or for other purpose. Cf.:irradiation (2). 3. SYN:… …
5cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …
6Neutrino — For other uses, see Neutrino (disambiguation). Neutrino/Antineutrino The first use of a hydrogen bubble chamber to detect neutrinos, on November 13, 1970. A neutrino hit a proton in a hydrogen atom. The collision occurred at the point where three …
7Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
8Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …
9Plasma cosmology — [ Hannes Alfvén suggested that, by scaling laboratory results by a factor of 109, he could extrapolate magnetospheric conditions. Another scaling jump of 109 was required to extrapolate to galactic conditions, and a third jump of 109 was required …
10Électron — Traduction à relire Electron → …
