Frequently Asked Questions
What is the grating equation?
The grating equation relates line spacing, wavelength, and order to the diffraction angle. A bright fringe forms where the path difference equals a whole number of wavelengths.
Why does the calculator sometimes report no diffraction?
If the order and wavelength would require a sine greater than one, that fringe cannot physically form, so no angle exists.
How does line density affect the result?
Finer gratings with more lines per millimeter spread the colors over wider angles for the same wavelength.
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This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.