Re: The relativity of simultaneity



On Aug 6, 8:46 am, PD <TheDraperFam...@xxxxxxxxx> wrote:
On Aug 5, 7:39 pm, "Sue..." <suzysewns...@xxxxxxxxxxxx> wrote:



On Aug 5, 8:03 pm, "JohnRyskamp via NatScience.com" <u36003@uwe>
wrote:

===

Well, I can give you a fresh perspective on the mathematics of the relativity
of simultaneity, if you are interested:

Two simultaneous lightning strokes at opposite ends
of a train fire four cannon.

Two cannon are on a railway embankment.
Two cannon are at the ends of the moving train.

The head of a moving midpoint observer is squashed between
a pair cannon balls arriving simultaneously.
The head of midpoint observer on the embankment is squashed
between a pair cannon balls, arriving simultaneously.

That's according to << Einstein's relativity principle,
which states that:

All inertial frames are totally equivalent
for the performance of all physical experiments.


No, sorry, Sue, that is NOT what the principle of equivalence means.
It does NOT mean that identical results will occur.

It is also NOT what the uncertainty principle means.
It is also NOT what the Pauli exclusion principle means.
It is also NOT what a lot of other physical principles means.

It *IS* what Einstein's relativity principle means.

Do you drink too much or is it just your video monitor
wearing out?

Shouldn't you be learning how to calculate the
kinetic energy of a bullet, just on the remote chance
that someone may someday in some far away universe
decide to treat the propagation of light the same way.

http://www.glenbrook.k12.il.us/gbssci/phys/Class/energy/u5l1c.html

http://nobelprize.org/nobel_prizes/physics/articles/ekspong/


Sue...





If you thought that it did, it's a simple matter to correct the error
and start again.



In other words, it is impossible to perform a physical
experiment which differentiates in any fundamental sense
between different inertial frames. By definition, Newton's
laws of motion take the same form in all inertial frames.
Einstein generalized this result in his special theory of
relativity by asserting that all laws of physics take the
same form in all inertial frames. http://farside.ph.utexas.edu/teaching/em/lectures/node108.html

Sorry I took so many words to say that. :o)

Sue...

.