黑体辐射峰值计算器 — 公式

Wien's Displacement Law

The wavelength at which a blackbody emits most intensely is inversely proportional to its temperature.

Formula

lambda_max = b / T

  • *b* = 2.898 x 10^-3 m K (Wien displacement constant)
  • *T* = temperature in kelvin

    • Hotter objects peak at shorter (bluer) wavelengths; cooler objects peak at longer (redder) wavelengths.

    计算示例

    The Sun's surface at 5778 K.

    1. lambda_max = b / T
    2. lambda_max = 2.898e-3 / 5778
    3. lambda_max = 5.015e-7 m = 501.5 nm
    4. This falls in the green part of the visible spectrum.