Project: Spy Tech- Polarized Hidden Messages

We all know sunglasses make any spy look cool, but these will let you see secret messages! This secret message project uses polarized film (technically a linear absorptive polarizer) to make our message hidden. To see the message you either have to look through a second piece of film, or put on a pair of polarized sunglasses.

https://makezine.com/projects/spy-tech-polarized-hidden-messages/

Keywords: EXPERIMENT project polarizer polarized light VIEW ALL

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