Re: The velocity of light going pass a moving train.

On 20 jun, 21:04, Dono <s...@xxxxxxxxxxx> wrote:
On Jun 20, 5:27 pm, "papar...@xxxxxxxxx" <papar...@xxxxxxxxx> wrote:



On 20 jun, 18:29, Dono <s...@xxxxxxxxxxx> wrote:

On Jun 19, 11:05 pm, "Jeckyl" <n...@xxxxxxxxxxx> wrote:

"Dono" <s...@xxxxxxxxxxx> wrote in message

news:1182303768.824683.175520@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Yes, I kept trying to get dr.Jeckyll to understand it ......I already
showed him the formula, to no avail (at least, so far).

You were simply misunderstanding the problem and so coming up with the wrong
solution.

No, idiot. You simply don't understand aberration, that is all.
If you stopped talking and you started using math you would
understand. But since you avoid using math like the plague, you keep
repeating the same errors.

It helps when you are actually talking about the same problem as
everyone else (G, Harry, myself). As I said .. you were using the right
formulas but misapplying it (as far as the problem the rest of us were
talking about).

Again, no, idiot. The description of the problem in math terms is not
as ambigous as you keep making it to be.
Here it is, one more time, mr. Jackasss:

-In the traincar frame theta_car=pi/2
-In the track frame

cos(theta_track)=(cos(theta_car)-v/c)/(1-v/c*cos(theta_car))

So, can you calculate cos(theta_track)? I asked you 5 times, why are
you so shy about using a little math?

Since you don't get the math and you didn't get the "separation speed"
explanation, I will give you a third explanation: since in relativity
all frames are equivalent, instead of having the train moving Left to
Right with respect to the tracks, imagine that the tracks move Right
to Left while the light bounces vertically in the car frame. How is
the light inclined in the track frame? If you still don't get it, look
at these pictures:

http://www.fourmilab.ch/cship/aberration.html

But in those pictures, the observer is in the train frame and he sees
through the window as if the ground is moving from left to right and,
obviously the rain is falling with an angle that clearly is inclined
into the direction of the movement of the ground, again as seen from
the train frame. So those pictures actually contradict what you are
saying.

Miguel Rios

In both cases the light is inclined from right to left, i.e. it
makes an angle greater than 90 degrees with the semipositive x-axis.
Try understanding the relativistic aberration formula, would you?

I think everybody agrees that those pictures correctly show how the
aberration works.
In the previous discussion, of the inclination of the light going
straight up in the frame of a moving train, it is quite evident that
if we identify in those pictures the rain as the light (in this case
coming from the ceiling to the floor of the train) and the ground as
the moving train (moving from left to right), the light is indeed
inclined into the direction of the movement of the train.

Miguel Rios

.

Relevant Pages

  • Re: The velocity of light going pass a moving train.
    ... velocity of light between moving objects. ... example of a moving train to do this. ... In any and all SR inertial frames, the measurement ... sync as measured in the frame of the track? ...
    (sci.physics.relativity)
  • Re: time dilation
    ... If a weight is dropped from the top of a train car to ... In the Lorentz equations, a clock in S', the frame of reference ... that are moving inertially, relates the coordinates from one frame to ...
    (sci.physics.relativity)
  • Re: The relativity of simultaneity
    ... which the train is moving) will reach the passenger before flash A. ... Closing velocities as perceived by the track observer ... light from different directions in the M' frame is isotropic. ... Closing velocity between two moving entities is ...
    (sci.physics.relativity)
  • Re: Are *observed* SR effects real?
    ... On the train, he uses the same very precise spring scale. ... that the train is moving. ... you are at a higher or lower absolute motion than in another frame. ...
    (sci.physics.relativity)
  • Re: The velocity of light going pass a moving train.
    ... Let Lbe the length of the train while not ... When it is moving at v, ... the moving train as measured in the track frame. ... measurements, in the frame of the tracks. ...
    (sci.physics.relativity)
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