Guest
How cute.
https://www.youtube.com/watch?v=wdgzU_84VMg
https://www.youtube.com/watch?v=wdgzU_84VMg
Navigation
Install the app
How to install the app on iOS
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
More options
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
H
Helmut Wabnig
Guest
On Mon, 21 Jul 2014 08:37:47 -0700 (PDT), mrdarrett@gmail.com wrote:
Yep. he invented a motor.
w.
How cute.
https://www.youtube.com/watch?v=wdgzU_84VMg
Yep. he invented a motor.
w.
Guest
On Monday, July 21, 2014 11:26:27 PM UTC-7, Helmut Wabnig wrote:
Why the odd angle for the windings, though?
On Mon, 21 Jul 2014 08:37:47 -0700 (PDT), mrdarrett@gmail.com wrote:
How cute.
https://www.youtube.com/watch?v=wdgzU_84VMg
Yep. he invented a motor.
w.
Why the odd angle for the windings, though?
J
John Larkin
Guest
On Mon, 21 Jul 2014 08:37:47 -0700 (PDT), mrdarrett@gmail.com wrote:
As long as he's making an air bearing, he should dump all that electronics and
make an air motor, too. They go to millions of RPMs.
--
John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com
Precision electronic instrumentation
How cute.
https://www.youtube.com/watch?v=wdgzU_84VMg
As long as he's making an air bearing, he should dump all that electronics and
make an air motor, too. They go to millions of RPMs.
--
John Larkin Highland Technology Inc
www.highlandtechnology.com jlarkin at highlandtechnology dot com
Precision electronic instrumentation
W
whit3rd
Guest
On Tuesday, July 22, 2014 12:18:30 PM UTC-7, John Larkin wrote:
Jesse Beams was able to magnetically levitate a ball bearing, and in vacuum
get it up to 1.5 MHz or so, 2500 mph surface speed and a billion g's of
equatorial acceleration. The limit was strength of the rotor.
Quite a guy: his 1925 dissertation was on 10 ns time measurements.
<http://www.surplusshed.com/pages/item/l14481.html>
On Tue, 22 Jul 2014 15:15:10 -0400, Phil Hobbs
hobbs@electrooptical.net> wrote:
You can levitate a golf ball and spin it really fast with just a
compressed air nozzle.
I don't know the max speed anyone has spun a macroscopic object. NMR
magic-angle spinning goes above 4 million RPM.
Jesse Beams was able to magnetically levitate a ball bearing, and in vacuum
get it up to 1.5 MHz or so, 2500 mph surface speed and a billion g's of
equatorial acceleration. The limit was strength of the rotor.
Quite a guy: his 1925 dissertation was on 10 ns time measurements.
<http://www.surplusshed.com/pages/item/l14481.html>
W
whit3rd
Guest
On Tuesday, July 22, 2014 3:33:22 PM UTC-7, whit3rd wrote:
Drat, I mis-copied the Jesse Beams reference
<http://www.nasonline.org/publications/biographical-memoirs/memoir-pdfs/beams-jesse-w.pdf>
Parenthetically, that ultracentrifuge was operating in the 1960s and 1970s, and
eventually he switched some of the controls to solid state, using the new uA741!
Drat, I mis-copied the Jesse Beams reference
<http://www.nasonline.org/publications/biographical-memoirs/memoir-pdfs/beams-jesse-w.pdf>
Parenthetically, that ultracentrifuge was operating in the 1960s and 1970s, and
eventually he switched some of the controls to solid state, using the new uA741!
P
Phil Hobbs
Guest
On 7/22/2014 11:51 AM, John Larkin wrote:
You can levitate a golf ball and spin it really fast with just a
compressed air nozzle. You point the nozzle upwards, and rest the ball
on the air stream (it's quite stable). Then you slowly tilt the nozzle
down a bit, and the ball starts to rotate more and more rapidly as
gravity pushes it out of the centre of the stream and into the air
velocity gradient at the edge.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
On Mon, 21 Jul 2014 08:37:47 -0700 (PDT), mrdarrett@gmail.com wrote:
How cute.
https://www.youtube.com/watch?v=wdgzU_84VMg
As long as he's making an air bearing, he should dump all that electronics and
make an air motor, too. They go to millions of RPMs.
You can levitate a golf ball and spin it really fast with just a
compressed air nozzle. You point the nozzle upwards, and rest the ball
on the air stream (it's quite stable). Then you slowly tilt the nozzle
down a bit, and the ball starts to rotate more and more rapidly as
gravity pushes it out of the centre of the stream and into the air
velocity gradient at the edge.
Cheers
Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics
160 North State Road #203
Briarcliff Manor NY 10510
hobbs at electrooptical dot net
http://electrooptical.net
J
John Larkin
Guest
On Tue, 22 Jul 2014 15:15:10 -0400, Phil Hobbs
<hobbs@electrooptical.net> wrote:
I don't know the max speed anyone has spun a macroscopic object. NMR
magic-angle spinning goes above 4 million RPM.
--
John Larkin Highland Technology, Inc
jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com
<hobbs@electrooptical.net> wrote:
On 7/22/2014 11:51 AM, John Larkin wrote:
On Mon, 21 Jul 2014 08:37:47 -0700 (PDT), mrdarrett@gmail.com wrote:
How cute.
https://www.youtube.com/watch?v=wdgzU_84VMg
As long as he's making an air bearing, he should dump all that electronics and
make an air motor, too. They go to millions of RPMs.
You can levitate a golf ball and spin it really fast with just a
compressed air nozzle. You point the nozzle upwards, and rest the ball
on the air stream (it's quite stable). Then you slowly tilt the nozzle
down a bit, and the ball starts to rotate more and more rapidly as
gravity pushes it out of the centre of the stream and into the air
velocity gradient at the edge.
Cheers
Phil Hobbs
I don't know the max speed anyone has spun a macroscopic object. NMR
magic-angle spinning goes above 4 million RPM.
--
John Larkin Highland Technology, Inc
jlarkin att highlandtechnology dott com
http://www.highlandtechnology.com
D
doppler
Guest
ol' Freon Eye wrote:
Your freon eye can top 2.5 million rpm if you spin it up gently so as
not to tear loose the retina.
On Mon, 21 Jul 2014 08:37:47 -0700 (PDT), mrdarrett@gmail.com wrote:
How cute.
https://www.youtube.com/watch?v=wdgzU_84VMg
As long as he's making an air bearing, he should dump all that electronics and
make an air motor, too. They go to millions of RPMs.
Your freon eye can top 2.5 million rpm if you spin it up gently so as
not to tear loose the retina.