Concept question

  • Thread starter andytran
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  • #1
andytran
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i'm jux wondering would a laser mounted on a spaceship travelling at half the speed of light... wouldn't this make the speed of the laser on the ship change to 1.5c??

thx
 

Answers and Replies

  • #2
chroot
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No. The speed of light is always locally measured to be c. This is the first postulate of special relativity.

- Warren
 
  • #3
NateTG
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People who see the spaceship moving at 0.5 times the speed of light would see the laser at a different (blue shifted) color that the people on the spaceship.
 
  • #4
andytran
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but the observer still see the speed of the laser to be c.?
so the speed the stay the same, only the wavelength change according to the observer perspective??
 

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