To plot the spectral radiance of a blackbody in MATLAB, we need to use Planck's law and plot the function for a given temperature.

main.m760 chars24 lines

In this code, we first define the constants we will need: Planck's constant `h`

, the speed of light `c`

, and the Boltzmann constant `k`

. We then define a temperature range over which to plot the spectral radiance using `linspace()`

. We also define a range of wavelengths over which to calculate the spectral radiance.

Using Planck's law, we calculate the spectral radiance for each temperature and wavelength, storing the results in a matrix `B_lambda`

where rows correspond to temperatures and columns correspond to wavelengths.

Finally, we plot the results using `loglog()`

, with wavelength on the x-axis and spectral radiance on the y-axis. We also add a legend showing the temperature corresponding to each curve.

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