![]() ![]() When light strikes a diffraction grating, it multiplies for the source with a parallel slit.In this case, Huygens' Principle is relevant. ![]() The wavefront will be perpendicular to the rays and parallel to the grating since the rays and wavefront constitute an orthogonal set. The rays will fall in a parallel bundle on the grating.If there are N lines per metre on a diffraction grating then d can be calculated. l wavelength on the light in metres (m) This equation can be rearranged to. d grating spacing in metres (m) J angle of diffraction. The diffraction grating splits up the light into a spectra. A diffraction grating is a periodic optical element used in optics that divides light into many beams that go in various directions (i.e., different diffraction angles). Diffraction gratings are used in spectrometers.When a diffraction grating is lit by a wide-spectrum (for instance, continuous light source), the colors of "rainbow" can be produced.At the first minimum adjacent to the central maximum of …. ![]()
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