7.3 Gravity as a Geometric Phenomenon
107
that the velocity dependent force you obtained in Exercise 7.8 has exactly this
form, with h 0 j playing the role of the vector potential. For this reason the force
is often called a gravitomagnetic force. Having no classical analog it is peculiar
to relativity and has been measured in satellite experiments (Everitt 2015; Adler
2000).