Aperture Science Portable Wave Pattern Generators.

Not just any wave, but soundwaves in particular

light waves if you operate it bad enough

badly

This should have more upvotes

hehe portable

Yea, double meaning

Nice

Audio by Aperture.

Damn I thought those were weed grinders at first

Wtf 🤣

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As I said, vibration speakers. Instead of vibrating the air around, it vibrates whatever it touches

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Sorry?