Wien’s Law Calculator: Calculate Peak Wavelength Efficiently

This tool will calculate the peak wavelength of radiation emitted by a blackbody given its temperature.

How to use the Wien’s Law Calculator

Wien’s Law describes the relationship between the temperature of a black body and the wavelength of its peak emitted radiation. To use this calculator, enter the temperature in Kelvin and press the “Calculate” button. The result will be displayed in nanometers.

Explanation of the Calculation

Wien’s Law is given by the formula:

λ_max = b / T

Where:

• λ_max is the peak wavelength in meters.
• b is Wien’s displacement constant, approximately equal to 2.897771955 × 10⁻³ m K.
• T is the absolute temperature of the black body in Kelvin.

This calculator converts the peak wavelength from meters to nanometers for easier interpretation, since 1 meter equals 1e9 nanometers.

Limitations

This calculator assumes an ideal black body. Real-world objects may deviate from the ideal behavior. Additionally, users must input the temperature in Kelvin, as other units like Celsius or Fahrenheit are not supported. Ensure the temperature entered is positive and non-zero to get a valid result.