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more relativity gibberish

January 8 2018 at 1:39 PM
roger 

 
Jerry Gorline, MS Physics, University of Louisville (1988) : “Let’s say that you are in an elevator traveling upward near the speed of light. For the sake of argument, let’s assume that your elevator is equipped with internal inertial dampeners to allow for extreme acceleration without injury. You shine a laser beam from your hand onto the ceiling and find that the beam hits the ceiling normally, at the speed of light.”

--so, for “you” the speed of light is constant c. Then he continues:

“But if an outside observer in a non-accelerating reference frame was able to monitor your laser beam’s trip, that beam would take an extremely long time to hit the ceiling, maybe near the end of time.”

- WTF is being said here (?) Is it being said that for the outside observer the light is going slower (?) so that it can’t reach the ceiling.
Continues:

“The relativistic effect of time dilation would speed up time for you but to an outside observer it would seem that time for you has stopped.”

- WTF other relativists say that for “you” (i.e. the traveller) it is the outside universe that has stopped/slowed down and “you” experience time normally, not that “would speed up time for you”.

And he continues to talk more gibberish.

Going with the bit said: “…time dilation would speed up time for you but to an outside observer it would seem that time for you has stopped.”

- So, the way he thinks of time dilation is that for the traveller time is going faster, so looks at rest of universe and events go by outside very fast, which conforms to the outside observer saying time in the spaceship passes slower, and then therefore based on this there is an absolute/preferred frame; but relativity is supposed to deny absolute/preferred frame. So, this MSPhysics doesn’t believe relativity, although he thinks he believes relativity.

Ref:https://www.quora.com/



 
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roger

Re: more relativity gibberish

January 8 2018, 1:50 PM 

Going with the bit said: “…time dilation would speed up time for you but to an outside observer it would seem that time for you has stopped.”

-- if this were true, then you can tell if you are moving or not:


Given observer A and B:

if A observes B's clock as slower then he knows B is moving

if B observes A's clock as faster then B knows he is moving


and that would violate relativity, where you are not supposed to know if you are moving or not

hence the paradox:

according to relativity A and B are supposed to be saying the other person's clock is slower.


BUT MScPhysics doesn't believe in relativity, despite thinking he does believe in relativity.


 
 
 
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