This is not a sound laser; the beam has some similar properties to a laser (e.g.... | Hacker News

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aidenn0 5 months ago | parent | context | favorite | on: Making a rickroll laser: A parametric speaker

This is not a sound laser; the beam has some similar properties to a laser (e.g. collimation), but it works more like a directional antenna.

jamal-kumar 5 months ago [–]

Yeah I think you're correct. Really interesting distinction

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