Diffraction grating and single slit
Description
Print slit twice, and grid once. You can increase/decrease the width of slit by using 2 of them simultaneously, or for different experiments with interference and diffraction. Can do 2 experiments: 1) 1 slit near light source and 2nd slit near observer. Can be seen only diffraction pattern. 2) 1 or 2 slits near light source and diffraction grating near observer. Can be seen both diffraction and interference patterns. Caution! Never look straight at lasers unless you 100% know it is very low power! Instead of a laser recommended to use used single color LEDs which are much safer! As an alternative, you can use a flashlight from a phone, but then the diffraction pattern is very hard to see.
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