4 Jan
2014
4 Jan
'14
4:23 p.m.
On Sun, January 5, 2014 12:39 am, Fons Adriaensen wrote:
On Sat, Jan 04, 2014 at 09:24:54PM +1100, Patrick
Shirkey wrote:
This little guy seems to have mastered the art:
http://www.youtube.com/watch?v=1jvcgz-BiHs
I suppose it is possible that some materials could be quite energy
efficient as they are destructed. I wonder if it is theoretically possible
to harness this affect to generate energy from some exotic materials
thereby using sound as a tool to generate energy which could be used to
generate more sound thereby creating a pretty impressive feedback loop.
Does cavitation have a role to play?
No idea. If it does that could be rather destructive on some
materials.
What is clear is that acoustic radiation pressure
plays a role.
And that's a subject that has caused a lot of confusion and false
results throughout the history of acoustics as a science. Some big
names (including Rayleigh) have burnt their fingers on it, so it's
not and easy matter. To prime the confusion, there are at least
two formulations of acoustic radiation pressure: one from Rayleigh
(which depends on non-linearity) and one due to Langevin (which
does not depend on it).
Theoretically would an ambisonic levitation system be able to lift an
object with large surface area, high rigidity and low mass? For example a
carpet made from layered graphene?
Would it require less energy than an equivalent magnetic levitation system?
I wonder how much graphene is required to support an object with the mass
of a human.
--
Patrick Shirkey
Boost Hardware Ltd