Recent content by kasha

Thanks but I was looking for more explanation. for question (1 & 2). we simply use Galilean Transformation (let's not worry about Lorentz transformation) The Galilean transformation gives the coordinates of the point as measured from the fixed frame in terms of its location in the moving...

Homework Statement The Observer (me) is at Inertial Frame of Reference: 1) I am sitting at a car moving east v=30 km/h relative to earth A bird flying east v = 10 km/h relative to earth What is the speed of bird for me? 2) I am sitting at a car moving east v=30 km/h relative to earth A bird...

I actually found the answer for that... First: the lines are not perfectly parallel, they are almost parallel. over the very short distance (d in Angstrom) the paths of the reflected x-rays C and C' are pretty much parallel, but over the distance of the screen of the detector let's say it is...

This may be a little of a stupid question. But I was looking at a diagram describing Bragg's Law of Diffraction. and I was like...how can an interference happen if wave beam C and wave beam C' are hitting different points on the detector screen?! they are not hitting the same point on the...

Oh wow...never heard of that paradox, but that makes much more sense than by training fitting in a tunnel :-) Got all the answers I was looking for: http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/polebarn.html Many Thanks

You are right...there is no actual implementation of my scenario. Tunnel Height is more realistic constrain than the tunnel length. but couldn't come up with a scenario that would utilize the Tunnel Height, because the tunnel height would be unchanged relative to the train operator since the...

Assume there is an engineer who built a tunnel, tunnel length is 10m, and we have a train its length is also 10m...so the tunnel can encompasses the entire length of the train. But if we assume that train is a light express train, it always comes through the tunnel at relativistic speed, let's...