See if you had a device which projected some kind of wave like microwaves which excited dust particles (or objects in the room), which made them vibrate and cause sound.... could that work?

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Avoid cutting yourself when slicing vegetables by getting someone else to hold the vegetables while you chop.

In article , says...

See if you had a device which projected some kind of wave like microwaves which excited dust particles (or objects in the room), which made them vibrate and cause sound.... could that work?

maybe you want to look up ultrasonic audio or stereo.

Jamie

"M Philbrook" wrote in message
...
In article , says...

See if you had a device which projected some kind of wave like microwaves
which excited dust particles (or objects in the room), which made them
vibrate and cause sound.... could that work?

maybe you want to look up ultrasonic audio or stereo.

Baked beans tins & bits of string is more his speed.