James E. Faller (January 17, 1934 – June 14, 2023) was an American physicist and inventor who specialized in the field of gravity.
He invented a gravity motion sensor, called the Absolute Gravimeter, which is sensitive enough to detect changes in the local gravitational field due to a person's mass.
In that same year, he received the Joseph F. Keithley Award for Advances in Measurement Science.
His research interests included geophysics, experimental relativity, fundamental constants, and precision measurement experiments designed to look for possible invalidations of accepted physical laws at extreme magnitudes.
[2] The citation for the award was "For the development of sensitive gravitational detectors and their successful application to the study of physics and geophysics."