PBL: Thin film interference

IB Physics: PBL: Thin film interference

Camera lenses often have an antireflective coating. This thin film of transparent material reflects part of the light at the first surface and part at the second. The two reflected waves interfere destructively to cancel out the reflection. Here is an animation from Paul Falstad.This is a wave incident on an antireflective layerThis is the same wave but no antireflective layerHave a look at (HL) Thin film interference...

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