0
$\begingroup$

This question already has an answer here:

example

in the below image,will there be complete destructive interference when s4 is placed in front of s3 and where does that energy go.can it be extracted from the system.

$\endgroup$

marked as duplicate by Kyle Kanos, Jon Custer, John Rennie quantum-mechanics Jan 30 '17 at 17:04

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • 1
    $\begingroup$ You could say that $S3$ was a source of light and $S4$ a perfect absorber of the light from $S3$. $\endgroup$ – Farcher Jan 30 '17 at 8:52
  • $\begingroup$ I don't understand, two sources can form an interference pattern (a sequence of minima and maxima), they do not just cancel out each other globally... $\endgroup$ – MsTais Jan 30 '17 at 15:53