I understand that this concept is about 2 (or more) waves meeting in constructive (when waves are added to form larger amplitude wave) or destructive (when waves are subtracted to form smaller amplitude waves) inteference but I don't really understand what path difference is about?(adsbygoogle = window.adsbygoogle || []).push({});

I've read up and it shows me many numerical interpretations but I can't understand how I can relate it to superposition.

It would be helpful if someone can explain the concept of path difference. Thank you in advance.

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# Superposition, interference and mathematical description

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