Phys. Rev. Focus27, 22 (2011) – Published June 3, 2011
Theorists created a gravitational model that is mathematically analogous to one for a standard superconducting device, extending the ways that the tools of general relativity can lead to insights into condensed matter physics.
Phys. Rev. Focus7, 8 (2001) – Published February 15, 2001
Extra spatial dimensions–beyond the three we know–could alter Newton’s inverse-square law of gravity at short distances. But new measurements show that Newton is correct down to at least 200 micrometers.