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Illustration Double-slit Experiment - basic setup

<span>Double-slit Experiment - basic setup</span>
Double-slit Experiment - Basic setup

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For the double-slit experiment you need a light source, which should produce a monochromatic, parallel light (for a sharp interference pattern). The light source can be for example a laser. You also need a double slit (e.g. a wall with two narrow slits) and of course a detector screen where the interference pattern appears when you send the light through the double slit.