Discussion:
More on Einstein
(too old to reply)
Corey White
2017-04-29 03:36:01 UTC
Permalink
Raw Message
Einstein won the nobel prize with his photo electric effect. He was able to create an electrical current from photons of light. Doing this he could measure the speed of light in a way no one else could have before. He was able to prove that no matter how light reaches us it is a constant. Even a rocket was circling the earth to catch up with the dawn, the light from the sun would reach it just as quickly as if the rocket was never launched. Everything else in the universe exists in a state of relativity.

If the rocket circling the earth was traveling west at 200 MPH, while the earth rotated east at 1,000 MPH, you could say it was really moving at 800 MPH. That's relativity. Light being the only constant, and space and time not just empty nothingness. Perhaps space and time were relative too!

Fast forward. Two atomic clocks fly on jets in opposite directions around the Earth. It turns out they come back at different times.

The next step may be testing if time moves forward with the earth going east, and backwards if a jet flew fast enough from east to west.
Mike Duffy
2017-04-29 04:08:57 UTC
Permalink
Raw Message
Post by Corey White
Einstein won the nobel prize with his photo electric effect.
He was able to create an electrical current from photons of light.
Doing this he could measure the speed of light
This is not an accurate description of the photo-electric effect. What he
discovered was that an electrical current could be produced between two
conductors in a vacuum to which had been applied a specific voltage AND
bathed in photons of a specific frequency that varied with said voltage.

The current was proportional to the photon density, but independant of the
proton frequency, provided that the photon frequency was higher than the
threshold determined by the applied voltage.

This experiment in no way can be used to determine the speed of light.

https://en.wikipedia.org/wiki/Photoelectric_effect
Corey White
2017-04-29 15:13:30 UTC
Permalink
Raw Message
Post by Mike Duffy
Post by Corey White
Einstein won the nobel prize with his photo electric effect.
He was able to create an electrical current from photons of light.
Doing this he could measure the speed of light
This is not an accurate description of the photo-electric effect. What he
discovered was that an electrical current could be produced between two
conductors in a vacuum to which had been applied a specific voltage AND
bathed in photons of a specific frequency that varied with said voltage.
The current was proportional to the photon density, but independant of the
proton frequency, provided that the photon frequency was higher than the
threshold determined by the applied voltage.
This experiment in no way can be used to determine the speed of light.
https://en.wikipedia.org/wiki/Photoelectric_effect
So how did he determine the speed of light?
Mike Duffy
2017-04-29 15:43:20 UTC
Permalink
Raw Message
Post by Corey White
So how did he determine the speed of light?
He did not. His contribution to science was to posulate that it is always
the same, no matter the relative speed of the source with respect to the
detector.

https://en.wikipedia.org/wiki/Speed_of_light


Maxwell was the first to derive the speed of light on the basis of the
values of electical permittivity and magnetic permeability of free space.

https://en.wikipedia.org/wiki/Maxwell%27s_equations
Corey White
2017-04-29 16:38:57 UTC
Permalink
Raw Message
Post by Mike Duffy
Post by Corey White
So how did he determine the speed of light?
He did not. His contribution to science was to posulate that it is always
the same, no matter the relative speed of the source with respect to the
detector.
https://en.wikipedia.org/wiki/Speed_of_light
Maxwell was the first to derive the speed of light on the basis of the
values of electical permittivity and magnetic permeability of free space.
https://en.wikipedia.org/wiki/Maxwell%27s_equations
As you said he invented a detector for light. What you don't realize is the impossibility of using any other detector to prove his theory. Other people have timed light before, and other people have found a way to show light can be converted to electricity. However Einstein is given credit for these, with good reason.

I'm not arguing with you either. So don't expect further responses.
Loading...