Light diffraction experiment on single slit is one of the experiments to determine the wavelength of a laser light source He-Ne (λ = 633 x 10-9 m). Light diffraction bending of light when the process is about a barrier. Where is He-Ne laser light is passed in a single pass. The pattern of diffraction of the light depends on the ratio of the size of the wavelength of the gap width is skipped. The relationship between the width of the slit with the wavelength of light can be written: d sin θ = n λ. Thus, obtained the wavelength (λ) of laser light on the source of He-Ne ofKey words: Diffraction of light, He-Ne laser, wavelength.
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