  A simple general relativity theory for objects moving in gravitational fields
is developed based on studying the behavior of an atom in a gravitational
field. The theory is applied to calculate the satellite time dilation, light
deflection by the sun, and Mercury's precession with an error of less than 1%.
The approach to the new theory introduced here is radically different from the
geometric approach used by Einstein's general relativity. The theory is field
based where the potential energy of a system of masses can be easily calculated
and the force can be found as the gradient of the potential field in analogy to
the Newtonian mechanics. The resulting field equations become the traditional
Newton's equations when week gravitational effects are present. The theory
complies with all the known experimental results such as the gravitational time
dilation and faster light speeds higher in the gravitational field. The special
relativity theory of an object moving without experiencing gravitational fields
can be derived directly from the gravitational field equations introduced here.
The theory introduced here has crucial differences to Einstein's general
relativity theory. For example, the gravitational field cannot accelerate an
object to higher than the speed of light and the event horizon of a black hole
(where light cannot escape) has to be of zero radius, essentially meaning that
light can escape any object unless the object has infinite density. Another
primary consequence of this study is that the principle of equivalence of
gravitational and inertial mass has only limited validity and a new definition
of gravitational mass is given here.
