4 Jan
2014
4 Jan
'14
11:24 a.m.
On Sat, January 4, 2014 11:19 am, Fons Adriaensen wrote:
On Fri, Jan 03, 2014 at 05:01:33PM -0600, Charles Z
Henry wrote:
It seems like this technique could be used to move small objects a fairly
large distance as long at the beam forming is applied correctly. I imagine
the objects would start to get hot at some point.
Does cavitation have a role to play?
I wonder what the results would be with other gases or fluids? Is it
theoretically possible to lift much larger objects if they were contained
in a different gas or fluid rather than standard earth grade air?
--
Patrick Shirkey
Boost Hardware Ltd
The peak pressure difference occurs where the
volume velocity is zero.
The location of the peak spatial derivative of pressure coincides with
the
location of peak volume velocity.
I don't think acoustic levitation can be explained as long as
linearity is assumed - because in that case there can't be any
constant term in the forces that he acoustic waves generate.
So what's going on here is probably a lot more complex than
we imagine, and the way it's 'explained' in the video is
completely bogus.