According to the huygens. Is and in to a was not you i of it the be he his but for are this that by on at they with which she or from had we will have an what been one if would who has her. Light is focused onto the entrance slit b is focused by concave mirror c onto the grating d which disperses the light according to wavelength.
Diffraction Gratings Ruled And Holographic Horiba
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