So, I am having trouble understanding how time dilation and length contraction in special relativity merge together and describe space-time. I guess the best way to ask this question is to pose a question, which i know how to answer mathematically, but I would like to discuss some thoughts about it.(adsbygoogle = window.adsbygoogle || []).push({});

Question:

Jack boards a spaceship and travels away from Earth at a constant velocity 0.45c toward Betelgeuse. One year lateron Earths clocks, Jack's twin, Jim, boards a second spaceship and follows him at a constant velocity of 0.95c in the same direction.

Would the peopleon earthmeasure the spaceship to be in the same position as thepeople in the spaceshipor would both of the observers measure the spaceship to be at different locations? From my current knowledge I would think that the earth observers would view the spaceship to becloserthan it actually appears because of the time it takes for light to travel back. Is this correct? I asked my physics professor and he said that I have to factor in Lorenz contraction at the same time and he said both observers would see the spaceship at the same position, which I found to be extremely confusing. Which would be the case. Can anyone explain how to understand time dilation and length contraction together in and mathematical or even intuitive sense?

Thanks ahead of time.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Combining time dilation and length contraction

Loading...

Similar Threads for Combining dilation length |
---|

I How does gravitational time dilation work? |

A General relativity: time dilation and speed of light |

B Is it really not possible to tell which object is moving? |

B Did I use the time dilation formula correctly? |

I Time dilation vs the Equivalence principle |

**Physics Forums | Science Articles, Homework Help, Discussion**