Gravitoelectromagnetism:

A Big Word for a Useful Analogy between Einstein's Theory of Gravity and Electromagnetism
(for a general audience)

bob jantzen
dept of mathematical sciences, villanova university

This is a hand-waving talk meant to convey general ideas. Details of ingredients of this discussion are unimportant. Just try to get the big picture.

0. Geometry not force determines motion in GR

1. NR example: spherical pendulum as "geodesic" motion

2. Mass curves spacetime; spacetime moves particles

3. How to measure test particle motion: inertial versus accelerated "rest" frame test observers

4. Inertial forces, electromagnetic analogy [NR]: corrective terms to time derivatives

5. Nongeodesic coordinate systems: corrective terms to space derivatives

6. How to tell if a vector is constant along a curve in space?

7. How to tell if a vector is constant along a curve in spacetime?

8. Spatial gravitational force in GR

9. Gyro precession effects [GP-B]