Wien approximation

Wien's approximation (also sometimes called Wien's law or the Wien distribution law) is a law of physics used to describe the spectrum of thermal radiation (frequently called the blackbody function). This law was first derived by Wilhelm Wien in 1896.^[1]^[2]^[3] The equation does accurately describe the short-wavelength (high-frequency) spectrum of thermal emission from objects, but it fails to accurately fit the experimental data for long-wavelength (low-frequency) emission.^[3]

^ Wien, W. (1897). "On the division of energy in the emission-spectrum of a black body" (PDF). Philosophical Magazine. Series 5. 43 (262): 214–220. doi:10.1080/14786449708620983.
^ Mehra, J.; Rechenberg, H. (1982). The Historical Development of Quantum Theory. Vol. 1. Springer-Verlag. Chapter 1. ISBN 978-0-387-90642-3.
^ ^a ^b Bowley, R.; Sánchez, M. (1999). Introductory Statistical Mechanics (2nd ed.). Clarendon Press. ISBN 978-0-19-850576-1.

[Wien1897-1] Wien, W. (1897). "On the division of energy in the emission-spectrum of a black body" (PDF). Philosophical Magazine. Series 5. 43 (262): 214–220. doi:10.1080/14786449708620983.

[MehraRechenberg1982-2] Mehra, J.; Rechenberg, H. (1982). The Historical Development of Quantum Theory. Vol. 1. Springer-Verlag. Chapter 1. ISBN 978-0-387-90642-3.

[bowleysanchez1999-3] Bowley, R.; Sánchez, M. (1999). Introductory Statistical Mechanics (2nd ed.). Clarendon Press. ISBN 978-0-19-850576-1.

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