Diffraction Grating Equation Calculator

Angle:
Grating Density:
Wavelength:
1st Order Diffracted Image:
2nd Order Diffracted Image:
3nd Order Diffracted Image:



The diffraction's equation is:
   mλ = a sinθm

Where:

  m: The order number of the diffracted image, m=1,2,3 ...
  θ: Grating angle, in radian
  a: Grating Spacing, in lines per meter
  λ: Wave Length, in meter

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