👨 This video helps you to understand the formation of the interference pattern.

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You can play with the applets yourself.

🍏 https://ngsir.netfirms.com/englishhtm/Interference.htm

🍏 https://ngsir.netfirms.com/englishhtm/Interference2.htm

🍏 https://www.walter-fendt.de/html5/phen/interference_en.htm

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• 10 Superposition