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PRACTICE / Wien’s displacement law

The peak shifts as a body heats

A blackbody is at 6000 K. Use Wien’s displacement constant b = 3.0 × 10⁻³ m·K.

Find the peak wavelength of its spectral radiance per unit wavelength.

Organize the givens & assumptions
  • T = 6000 K
  • b = 3×10⁻³ m·K

Ideal blackbody; spectrum per unit wavelength, absolute temperature in kelvin and stated Wien constant.

  1. A18 m18\ \mathrm m
  2. B5×10−6 m5\times10^{-6}\ \mathrm m
  3. C3×10−3 m3\times10^{-3}\ \mathrm m
  4. D5×10−7 m5\times10^{-7}\ \mathrm m

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