Wien Law Peak Wavelength Calculator
Every warm object glows, and Wien displacement law tells you which color it glows brightest at from its temperature alone. The peak wavelength equals a fixed constant, about two point eight nine eight millimeter kelvin, divided by the temperature in kelvin, so hotter objects peak at shorter, bluer wavelengths. That is why a red giant looks cool at around three thousand kelvin while a blue supergiant blazes past twenty thousand. This calculator returns the peak wavelength in nanometers along with the part of the spectrum it lands in, from infrared through visible to ultraviolet. Enter a temperature to see the dominant color of any star or heated body. Everything is computed locally in your browser.
How to use Wien Law Peak Wavelength Calculator
- Enter the object temperature in kelvin.
- Read the peak emission wavelength in nanometers.
- Check the color band label the peak falls into.
Frequently asked questions
How does temperature set the peak wavelength?
Wien displacement law says peak wavelength equals a fixed constant divided by temperature, so hotter objects peak at shorter, bluer wavelengths.
Why does a hot star look blue and a cool one red?
A star near 3000 K peaks in the red while one near 10,000 K peaks in the blue, which is exactly the color shift Wien law predicts from temperature.
What color band will my result fall in?
The tool maps the peak wavelength onto the visible or infrared or ultraviolet band, so you can see at a glance what color a blackbody at that temperature favors.
What is Wien Law Peak Wavelength Calculator?
Every warm object glows, and Wien displacement law tells you which color it glows brightest at from its temperature alone. The peak wavelength equals a fixed constant, about two point eight nine eight millimeter kelvin, divided by the temperature in kelvin, so hotter objects peak at shorter, bluer wavelengths.
Is Wien Law Peak Wavelength Calculator free to use?
Yes. Wien Law Peak Wavelength Calculator is completely free, with no sign-up and no usage limits.
Does Wien Law Peak Wavelength Calculator work in a web browser?
Yes. Wien Law Peak Wavelength Calculator runs in any modern web browser. There is nothing to download or install.
Is my data private with Wien Law Peak Wavelength Calculator?
Yes. Wien Law Peak Wavelength Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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