Some of the earliest, and arguably the most famous, experiments in optics involved interferometry, otherwise known as what happens when you have beams of light interacting with one another. As it turns out (although you all may be expecting this by now), this is not an easy exercise. However, given our trusty abilities to think physically and some handy-dandy equations, we will get through these sections together! Read on to continue the joy of learning about light.
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