Consider three space craft moving in and along a straight line and they are moving at speed of 0.5c.Now the middle space craft emits a light towards the front and back space air craft.do the light take same time to reach the surface of the two space craft
by 
vineesh
ANSWERS: 3
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no... this happens with all waves... does anyone know the name of the term that describes train effect(like a car driving by emitting a horn of consistent frequency but it seems to change pitch as it passes you
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No. Light ALWAYS travels at C in a vacuum. But the speed of the space craft also needs to be considered. The craft behind will be travelling towards the middle craft, therefore intercepting the light beam before the craft at the front which is moving away from the source. OFC the difference here depends on how far apart the spacecrafts are to begin with.
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but relative to the middle space craft..it seems that they are not moving and all are at same distance..so the light should reach at same time..are't they contradicting!!!!
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