So when we derive time dilation, and when we have a train moving and we shoot a light beam from the bottom to the top, to an outside observer not on the train he will see the light leave at an angle. So my question is why don't we factor the horizontal speed of the train in order have the horizontal component of speed for the light wave . And then use the x and y component to find the magnitude of the vector.
http://en.wikipedia.org/wiki/File:Time-dilation-002.svg
this is a link to the picture i am talking about.
I realize that the speed of light is constant relative to all observers based on Maxwells equations.
http://en.wikipedia.org/wiki/File:Time-dilation-002.svg
this is a link to the picture i am talking about.
I realize that the speed of light is constant relative to all observers based on Maxwells equations.