Free Blackbody Peak Wavelength Calculator
Find the peak emission wavelength of a blackbody using Wien's displacement law: lambda_max = b / T, where b = 2.898e-3 m K.
K
Peak Wavelength
0.000000501558 m
Peak Wavelength (nm)501.56 nm
Peak Frequency597,737,888,198,757.80 Hz
Peak Wavelength vs Temperature
Wien's Displacement Law
The wavelength at which a blackbody emits most intensely is inversely proportional to its temperature.
Formula
lambda_max = b / T
Hotter objects peak at shorter (bluer) wavelengths; cooler objects peak at longer (redder) wavelengths.
Example Calculation
The Sun's surface at 5778 K.
- 01lambda_max = b / T
- 02lambda_max = 2.898e-3 / 5778
- 03lambda_max = 5.015e-7 m = 501.5 nm
- 04This falls in the green part of the visible spectrum.
Frequently Asked Questions
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