Kirchhoff's law of spectral radiation

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• Gustav Kirchhoff — Infobox Scientist name = Gustav Robert Kirchhoff |300px image width = 200px caption = Gustav Kirchhoff birth date = birth date|1824|3|12|df=y birth place = Königsberg, East Prussia death date = death date and age|1887|10|17|1824|3|12|df=y death… …   Wikipedia

• Thermal radiation — is electromagnetic radiation emitted from the surface of an object which is due to the object s temperature. Infrared radiation from a common household radiator or electric heater is an example of thermal radiation, as is the light emitted by a… …   Wikipedia

• Kirchhoff , Gustav Robert — (1824–1887) German physicist Kirchhoff studied in his native city of Königsberg (now Kaliningrad in Russia), graduating in 1847. Three years later he was appointed a professor at Breslau. He moved to Heidelberg, where Robert Bunsen was professor… …   Scientists

• Atomic spectral line — In physics, atomic spectral lines are of two types: * An emission line is formed when an electron makes a transition from a particular discrete energy level of an atom, to a lower energy state, emitting a photon of a particular energy and… …   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

• Black body — As the temperature decreases, the peak of the blackbody radiation curve moves to lower intensities and longer wavelengths. The blackbody radiation graph is also compared with the classical model of Rayleigh and Jeans …   Wikipedia

• Emissivity — The emissivity of a material (usually written ε or e) is the relative ability of its surface to emit energy by radiation. It is the ratio of energy radiated by a particular material to energy radiated by a black body at the same temperature. A… …   Wikipedia

• Laws of science — The laws of science are various established scientific laws, or physical laws as they are sometimes called, that are considered universal and invariable facts of the physical world. Laws of science may, however, be disproved if new facts or… …   Wikipedia

• Cloud base — This article refers to meteorology. For the airborne base of the TV series Captain Scarlet and the Mysterons, see Cloudbase. The cloud base (or the base of the cloud) is the lowest altitude of the visible portion of the cloud. It is traditionally …   Wikipedia

• Cloud top — Mountains often reach above the cloud top The cloud top (or the top of the cloud) is the highest altitude of the visible portion of the cloud. It is traditionally expressed either in metres above the Earth (or planetary) surface, or as the… …   Wikipedia

• atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …   Universalium