distant radiation source

См. также в других словарях:

• radiation measurement — ▪ technology Introduction       technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement.       The term ionizing radiation refers to those… …   Universalium

• Radiation Laboratory — Ernest Lawrence s laboratory at University of California Berkeley, now known as Lawrence Berkeley National Laboratory, also was known as the Radiation Laboratory. Presently, there are a number of research laboratories with this name, including… …   Wikipedia

• electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …   Universalium

• Multipole radiation — is a theoretical framework for the description of electromagnetic or gravitational radiation from time dependent distributions of distant sources. These tools are applied to physical phenomena which occur at a variety of length scales from… …   Wikipedia

• Terahertz radiation — Electromagnetic waves sent at terahertz frequencies, known as terahertz radiation, submillimeter radiation, terahertz waves, terahertz light, T rays, T light, T lux and THz, are in the region of the electromagnetic spectrum between 300 gigahertz… …   Wikipedia

• Cosmic microwave background radiation — CMB and Cosmic background radiation redirect here. For other uses see CMB (disambiguation) and Cosmic background (disambiguation). Physical cosmology …   Wikipedia

• X-ray source — ▪ astronomy       in astronomy, any of a class of cosmic objects that emit radiation at X ray wavelength. Because the Earth s atmosphere absorbs X rays (X ray) very efficiently, X ray telescopes and detectors must be carried high above it by… …   Universalium

• point source — noun a concentrated source (especially of radiation or pollution) that is spatially constricted • Hypernyms: ↑beginning, ↑origin, ↑root, ↑rootage, ↑source * * * I. noun : a source of light or other radiation that is concentrated at a point …   Useful english dictionary

• Cyclotron radiation — is electromagnetic radiation emitted by moving charged particles deflected by a magnetic field. The Lorentz force on the particles acts perpendicular to both the magnetic field lines and the particles motion through them, creating an acceleration …   Wikipedia

• Electromagnetic radiation — Electromagnetism Electricity · …   Wikipedia

• Point source — For other uses, see Point source (disambiguation). A point source is a single identifiable localized source of something. A point source has negligible extent, distinguishing it from other source geometries. Sources are called point sources… …   Wikipedia