Thursday, December 1, 2016

Amplification or cancellation?

Today, I read more about holograms. I found out that when two light waves meet, they either amplify each other or cancel each other. What happens is determined by how in sync the two light waves are, as shown in the diagram here. The more similar the waves are, the more they get amplified, but if they're polar opposites, they cancel each other.

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