5 Jan
2014
5 Jan
'14
12:08 a.m.
Le Sat, 4 Jan 2014 20:19:27 +0000,
Fons Adriaensen <fons(a)linuxaudio.org> a écrit :
On Sat, Jan 04, 2014 at 06:16:31PM +0100, Dominique
Michel wrote:
And classical physics is even worst. In Einstein formula e=mc^2, the
only term for which we have a definition is c...
For e, it is no definition, only equations which are not definitions,
and this is the same issue with m=e/c^2, which is maybe the less
obvious equation of all equations.
Ciao,
Dominique
According to that presentation
http://www.dalembert.upmc.fr/Oleron2010/docs/Presentations/Oleron-Barriere.…
it look like Langevin (which is the same than Rayleigh first formula
in 1902) apply well when we are long enough from the source, and
when we are in its vicinity, Rayleigh (1905) must be applied.
Interesting, thanks for the pointer. And it closes the circle...
The first slide is a quote from one of Beyer's papers:
"It might be said that radiation pressure is a phenomenon that the
observer thinks he understands — for short intervals, and only
every now and then”
I remember reading the paper that comes from a very long time ago,
and that was what inspired my remark about radiation pressure being
one of the more elusive topics in acoustics !
Ciao,