The idea of making a “homemade” hologram projector sounds like something out of a sci-fi movie. But, according to TikTok, you can pull it off with just two items. Different homemade versions of the 3D ...

(via Steve Mould) You can make holograms just by etching lines into a shiny surface. All you need is a compass with two points (a divider). And to be able to get your head around the mind bending ...

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