Black bouk

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As the temperatur o a black bouk decreases, its intensity an aa decreases an its peak muives tae langer wavelenths. Shawn for comparison is the clessical Rayleigh–Jeans law an its ultraviolet catastrophe.

A black bouk is an idealised pheesical bouk that absorbs aw incident electromagnetic radiation, regairdless o frequency or angle o incidence. A white bouk is ane wi a "rough surface [that] reflects aw incident rays completely an uniformly in aw directions."[1]

References[eedit | eedit soorce]

  1. Planck 1914, pp. 9–10