When this is true, then 1 e h ν k T − 1 ≈ e − h ν k T {\displaystyle {\frac {1}{e^{\frac {h\nu }{kT}}-1}}\approx e^{-{\frac {h\nu }{kT}}}}     and so Planck's law approximately equals the Wien approximation at high frequencies.
Ak to platí, tak 1 e h ν k T − 1 ≈ e − h ν k T {\displaystyle {\frac {1}{e^{\frac {h\nu }{kT}}-1}}\approx e^{-{\frac {h\nu }{kT}}}}     a preto sa sa Planckov zákon približne zhoduje s Wienovým pri vysokých frekvenciách.