Greetings:

I know. Wrong group! Sorry! Please re-direct if I can post elsewhere.

Does anyone know (or where I can find) the highest achieved rpm to date?
High speed dental drills operate at 400,000 rpm. Turbochargers are up there
as well. Someone recalled a Scientific American article of a spinning metal
rod in a vacuum and magnetic field achieving 1,000,000rpm. Someone else
suggested 1.5 million revolutions per SECOND. I can't confirm any of this.
Would Guinness cover this sort of thing? I welcome suggestions or specific
links.

Thanks -

Len

Leonard M. Wapner wrote in message
...
Greetings:

I know. Wrong group! Sorry! Please re-direct if I can post elsewhere.

Does anyone know (or where I can find) the highest achieved rpm to date?
High speed dental drills operate at 400,000 rpm. Turbochargers are up
there
as well. Someone recalled a Scientific American article of a spinning
metal
rod in a vacuum and magnetic field achieving 1,000,000rpm. Someone else
suggested 1.5 million revolutions per SECOND. I can't confirm any of
this.
Would Guinness cover this sort of thing? I welcome suggestions or
specific
links.

Thanks -
Len

This is a physics group, so you'll get a physics oriented response.
Angular momentum is a better scale than spin rate, and neutron stars
(pulsars) take the cake. [Old Man]

"Old Man" wrote in message news:3f16084a_1@newsfeed...
Leonard M. Wapner wrote in message
...
Greetings:

I know. Wrong group! Sorry! Please re-direct if I can post elsewhere.

Does anyone know (or where I can find) the highest achieved rpm to date?
High speed dental drills operate at 400,000 rpm. Turbochargers are up
there
as well. Someone recalled a Scientific American article of a spinning
metal
rod in a vacuum and magnetic field achieving 1,000,000rpm. Someone else
suggested 1.5 million revolutions per SECOND. I can't confirm any of
this.
Would Guinness cover this sort of thing? I welcome suggestions or
specific
links.

I wonder ... could you establish some kind of plausible electron
spin/rpm equivalence? I know it's not supposed to have a classical
analogue, and all that, but there should be some argument ...

Golly! Fun with elementary rotational dynamics equations, again!
This much fun should be illegal!

Ok, here it comes!

"a = rw^2"

Well, that about clinches it: you want some impressive rpm without
pulling something apart, you want to go small. If you don't buy that
an electron itself has an rpm, try figuring out how to spin a
buckyball with a resonant laser ("resonant to what?" details left to
reader ... lasers are always cool for this kind of thing -- or maybe a
maser).

This is a physics group, so you'll get a physics oriented response.
Angular momentum is a better scale than spin rate,

Why? Maybe the galaxy itself takes the cake, but it's not spinning
very damn fast -- just there is so damn much of it! He asked for spin
rates, not momenta: it's a free country, it's ok to ask this.

and neutron stars
(pulsars) take the cake.

OTOH, IIRC, neutron stars may have some impressive raw spin rates too
.... any idea what they are? Or maybe it's only "impressive"
considering their mass ... not in absolute rpm terms.

"Leonard M. Wapner" wrote in message
...
Greetings:

I know. Wrong group! Sorry! Please re-direct if I can post elsewhere.

Does anyone know (or where I can find) the highest achieved rpm to date?
High speed dental drills operate at 400,000 rpm. Turbochargers are up
there
as well. Someone recalled a Scientific American article of a spinning
metal
rod in a vacuum and magnetic field achieving 1,000,000rpm. Someone else
suggested 1.5 million revolutions per SECOND. I can't confirm any of
this.
Would Guinness cover this sort of thing? I welcome suggestions or
specific
links.

Thanks -

Len




Some moieties of certain molecules and Ions can show such high angular
velocities, which has nothing to do with angular momentum per se. See if you
can find anything on "nitrate spin". Or better yet find those that were
designing flywheels for energy storage, using lithographic techniques.