|
Toshkent farmatsevtika instituti fizika, matematika va axborot texnologiyalari kafedrasi
|
| bet | 23/69 | | Sana | 19.03.2017 | | Hajmi | 172.07 Kb. | | #410 |
| Alpha Particle (Alpha Decay):
A particle of 2 protons and 2 neutrons (essentially a heliumnucleus) that is emitted by an unstable radioactive nucleusduring radioactive decay. It is a relatively low-penetration particle due its comparatively low energy and high mass.
Angular Momentum:
A measure of the momentum of a body in rotational motion about its centre of mass. Technically, the angular momentum of a body is equal to the mass of the body multiplied by the cross product of the position vector of the particle with its velocity vector. The angular momentum of a system is the sum of the angular momenta of its constituent particles, and this total is conserved unless acted on by an outside force.
|
| |
