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Toshkent farmatsevtika instituti fizika, matematika va axborot texnologiyalari kafedrasi
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| bet | 38/69 | | Sana | 19.03.2017 | | Hajmi | 172,07 Kb. | | #410 |
Gamma Ray Burst:
A narrow beam of intense electromagnetic radiation released during a supernova event, as a rapidly rotating, high-mass star collapses to form a black hole. They are the brightest events known to occur in the universe, and can last from milliseconds to several minutes (typically a few seconds). The initial burst is usually followed by a longer-lived 'afterglow' emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared and radio).
Gas:
A state of matter consisting of a collection of particles (molecules, atoms, ions, electrons, etc) without a definite shape or volume, and that are in more or less random motion. A gas tends to have relatively low density and viscosity compared to the solid and liquid states of matter, expands and contracts greatly with changes in temperature or pressure (“compressible”), and diffuses readily, spreading and homogeneously distributing itself throughout any container.
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