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Diffraction Grating Calculator

Diffraction Grating Calculator

Calculate the diffraction angle using: $$ \theta = \sin^{-1}\!\Bigl(\frac{m\, \lambda}{d}\Bigr) $$

* Use consistent units for wavelength (λ) and grating spacing (d). For example, both in nanometers.

Step 1: Enter Parameters

Diffraction Order, \(m\):

e.g., 1 (first order)

Wavelength, \(\lambda\) (nm):

e.g., 500 nm

Grating Spacing, \(d\) (nm):

e.g., 1000 nm

Prandtl Number

Coulomb’s Law

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