This week I learned about how holograms are made. It's a very facinating process, I learned about how a 2D peice of film can contain a 3D image. I also learned a lot about the nature and science of light. The most surprising thing I learned is that if you have two light scources both illuminating the same plane, the resulting wave pattern is not just the two light waves added together. They are combined in a different way.
Here's the video:
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