http://www.comteck.com/~doctor/Atom.gif
Gravity is something that was thought to be well understood during the earlier part of the 20th Century based on Newtonian Physics, however one must realize that althought their was an anbundant level of enthusiasim to explore the inner-workings of our uninverse on the subatomic level, in order to learn what we were dealing with in relation to new discoveries being made, Cambridge was one of the last to agree to it, yet still heald steadfast in their antiquated beliefs in spite of proven methods to show otherwise! and to this very day we have a variety of classes being taught to our students that "omitt" the corrections to the antiquated formulas that simply were not designed to work with "Quantum Mechanics"
I strongly recommend you consider reading the following books...
"Quantum Gravity"
By: Lee Smolin
Author of "The Life of The Cosmos"
ISBN# 0-465-07835-4
"Gravitation And SpaceTime"
(second eddition)
By: Hans C. Ohanian & Remo Ruffini
ISBN# 0-393-96501-5
"Subatomic Particles"
(The Discovery Of)
By: Steven Weinberg
Nobel Laureate and Author of "The First Three Minutes"
ISBN# 0-7167-2121-X
"The Search For Superstrings, Symetry, and the Theory of Everything"
By: John Gribbon
ISBN# 0-316-32975-4
These books seemingly tie into one another, and I will often review them in my library & make connections from one pahragraph in one book, where it will be explained in more functional detail in another & visea-vesa, also I am often making connections to what has been adversley rejected in the earlier part of the 20th century, and still happening today,
simply because they did'nt read these books!!! (LMAO)