Understanding the short-distance behaviour of gravity is crucial for constructing a quantum theory of gravity. The Newtonian inverse square law approximation has been tested in laboratory down to millimeter scales, but I'm not aware of any laboratory scale experiments testing general relativistic effects between two test bodies (frame dragging etc.). As far as I understand, string theory assumes that general relativity is a valid classical limit down to microscopic scales. Could it be that this assumption is simply wrong, even at millimeter scales?(adsbygoogle = window.adsbygoogle || []).push({});

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

Dismiss Notice

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!

# Any Laboratory Scale Test of GR's correction to Newtonian Gravity?

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