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fedorfan
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Does anyone know what the highest rpm in the universe is?
Does anyone know what the highest rpm in the universe is?
fedorfan said:My best guess would be a turbocharger at like 180,000 rpm.
Electrons around nuclei in atoms good enough candidates?fedorfan said:My best guess would be a turbocharger at like 180,000 rpm. I guess the universal speed limit would be the speed of light. Also, I am talking about whatever is rotating the fastest. Not pkanets or something though, I mean revolutions per minute, not year.
drboylecj said:http://www.popsci.com/gear-amp-gadgets/article/2009-06/dysons-new-vacuum-driven-fastest-motor-ever
apparently the highest RPM device in existence?
Superstring said:So the maximum RPM of an object is the speed of light divided by the object's circumference. That means the smaller the object, the faster it can spin.
Well, actuallySuperstring said:The maximum RPM in the universe is dependent on the radius of the spinning object.
The formula for calculating velocity of the outer edge of the "wheel" using RPM is:
[tex]\upsilon=C*RPM[/tex]
Therefore:
[tex]RPM=\frac{\upsilon}{C}[/tex]
Plugging the speed of light in for velocity (and making it an inequality to show that it has to be less than c):
[tex]RPM<\frac{c}{C}[/tex]
So the maximum RPM of an object is the speed of light divided by the object's circumference. That means the smaller the object, the faster it can spin.
drboylecj said:http://www.popsci.com/gear-amp-gadgets/article/2009-06/dysons-new-vacuum-driven-fastest-motor-ever
apparently the highest RPM device in existence?
drboylecj said:http://www.popsci.com/gear-amp-gadgets/article/2009-06/dysons-new-vacuum-driven-fastest-motor-ever
apparently the highest RPM device in existence?
You mean a brushless stepper motor?? What will he invent next??Compared to conventional motors, which use carbon brushes that spark to create the rotations, the DDM uses a a stator that creates a strong electromechanical field, which is then switched digitally using an on-board microprocessor. The motor never actually touches the rotors.
A hydrogen molecule, H2, if given a minimum nonzero angular momentum of h-bar, spins at roughly 1015 rpm:fedorfan said:Does anyone know what the highest rpm in the universe is?
When an electron is in a 'bound state' as it is when part of an atom, its position is not defined well enough to assign it an actual velocity - angular or linear. I don't think you can treat is in this classical way.tehno said:Electrons around nuclei in atoms good enough candidates?
The highest RPM (revolutions per minute) in the universe is difficult to determine, as the universe is constantly expanding and changing. However, scientists have measured some incredibly high speeds in various celestial bodies and events.
The fastest rotating object in the universe that has been measured is the pulsar PSR J1748-2446ad, with a rotational speed of 716 times per second. This is equivalent to a speed of 43,000 RPM.
According to Einstein's theory of relativity, nothing can travel faster than the speed of light. Therefore, it is not possible for any object in the universe to rotate faster than the speed of light.
Scientists use various methods to measure the RPM of celestial bodies, such as using telescopes to observe the rotational speed of planets and stars, or analyzing the frequency of electromagnetic radiation emitted by pulsars.
As the universe is vast and constantly expanding, it is possible that there are celestial bodies with higher RPMs than anything we have measured so far. However, these objects may be difficult to detect and measure due to their distance and other factors.