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Do Wien's displacement law hold true even for bodies with emissivity not equal to 1, that is, non-black bodies?
Wien's displacement law is a physical law that describes the relationship between the wavelength of the peak emission of a blackbody and its temperature. It states that as the temperature of a blackbody increases, the wavelength of the peak emission decreases.
Wien's displacement law is used in a variety of fields, including astrophysics, thermodynamics, and material science. It is commonly used to determine the temperature of stars and other celestial bodies, as well as to study the properties of different materials at high temperatures.
Doubt as to application refers to the uncertainty or limitations in applying Wien's displacement law to certain situations. While the law is generally accurate, there are some exceptions and complications that can arise when trying to use it in real-world scenarios.
Some potential sources of doubt include non-blackbody radiation sources, such as fluorescent or phosphorescent materials, as well as non-uniform temperature distributions within a blackbody. Additionally, the law assumes that the body is in thermal equilibrium, which may not always be the case.
Yes, there are other laws and theories that describe the relationship between temperature and wavelength of peak emission. Examples include Planck's law, Rayleigh-Jeans law, and Stefan-Boltzmann law. These laws have different applications and limitations, and may be more accurate in certain situations compared to Wien's displacement law.