[LAU] Optical microphone sees sound like never before

[David Kastrup]

"David W. Jones" <gnome at hawaii.rr.com> writes:

> https://www.sciencedaily.com/releases/2022/06/220622101415.htm
>
> If sound can be seen optically, can it be generated optically? Say, to
> go with a hologram?

I was of the opinion that laser-based interferometry microphoning off
window panes had already been standard fare of secret services for
decades.  I don't think you really want to use the kind of lasers that
successfully push surfaces around.

Plasma speakers <https://en.wikipedia.org/wiki/Plasma_speaker> are
enough of a high-energy ickiness.

-- 
David Kastrup