Technical data Young's double slit experimentItem No. P1195200 Principle In 1801 Thomas Young conducted an experiment in which he shone light from a single light source onto two slits, thus creating two beams of light which, when recombined, displayed the interference phenomenon. The classical investigation delivered final proof of the wave nature of light. Benefits
Tasks How can we use diffraction at a double slit to prove that light interferes? Direct a narrow beam of light onto a double slit and observe what happens. Determine the distance between the virtual light sources and, using this and the interference pattern, determine the wavelength λ of red light.
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