Electromagnetic radiation blackbody

Blackbody Radiation The process by which solar energy absorbed by the Earth is transformed into longer wavelengths and reradiated back into the atmosphere. In physics, a blackbody is a perfect adsorber of electromagnetic radiation that can be released at other wavelengths with no loss of total energy. 

This characteristic blackbody spectrum holds for objects other than fireplace pokers. In fact, the spectrum of electromagnetic radiation emitted by any substance depends only on its temperature and is independent of the substance itself. 

Max Planck in 1900 derived the correct form of the blackbody radiation law by introducing a bold postulate. He proposed that energies involved in absorption and emission of electromagnetic radiation did not belong to a continuum, as implied by Maxwell s theory, but were actually made up of discrete bundles—which he called quanta. Planck s idea is traditionally regarded as the birth of quantum theory. A quantum associated with radiation of frequency v has the energy... 

After holding posts at the universities of Munich and Kiel, Planck succeeded Kirchhoff at the University of Berlin in 1888 after the latter s death. Planck continued his research in thermodynamics, including attempts to connect heat with the Scottish physicist James Clerk Maxwell s theory of electromagnetic radiation. He also addressed a problem suggested by Kirchhoff, who had earlier established that the energy of radiation emitted by a blackbody depends on temperature and the frequency of the radiation. 

To solve the paradox of blackbody was Planck s hypothesis (inspired) to considered also the radiation s energy as dependent on frequency, with a universal constant of proportionality (h-Planck s constant), as well as the universal Boltzmarm constant appears into the thermal energy. In addition quantified in bimdles of energy, which acknowledge as energy quanta in few words, Planck considered Ihe quantification of electromagnetic radiation as ... 

Any object will radiate energy in the form of electromagnetic radiation purely as a consequence of its temperature. The red glow of an electric heater and the bright white light of the tungsten filament in an incandescent light bulb are familiar examples. This radiation is referred to as blackbody radiation. The physical properties... 

Blackbody radiation is the electromagnetic radiation given off by a solid when it is heated. 

This classical description of electromagnetic radiation satisfactorily explained the properties of visible radiation in the ultraviolet region. According to equations derived for the behavior of electromagnetic radiation based upon the concept of continuous wave motion, the energy emitted by a blackbody source at finite temperature increases without limit as the wavelength of the radiation approaches zero. This behavior is not experimentally observed. However, if one assumes, as did Planck (1901), that radiation is emitted by a source in discrete units called quanta or photons and not continuously, then the behavior of radiation in the ultraviolet region can be satisfactorily explained. This concept of... 

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