Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Streched spacetime

  1. Aug 4, 2010 #1

    When someone says that spacetime is stretched or compressed, is it meant to be taken literally? If so how would one determine which areas of spacetime are thicker/thinner
    (i know we can look at the metric but im talking about experimentally how would we know)? Or is this just another way of saying space is curved?

  2. jcsd
  3. Aug 5, 2010 #2


    User Avatar
    Gold Member

    Experimentally we can observe the rate that something falls and measure tidal effects, both being effects of spacetime curvature, or compression or whatever you call it. But the theory tells us nothing about what is actually there, causing things to move.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Streched spacetime Date
The inverse of spacetime curvature? Feb 13, 2018
I What is the spacetime dragging mechanism Feb 7, 2018
B Curvature of space vs. curvature of spacetime Jan 23, 2018
I Spacetime Of Flatland Jan 12, 2018