Gravity: Mysterious, Pretty Attractive and on the Pull

by Alan Hall

As one of the four forces we currently recognize in the Standard Model, gravity, although relatively weak - is trump card. It is the key to everything. Yet, despite all of this, our knowledge of gravity is incomplete. For example, where does this force come from? How does gravity propagate between objects? Do gravitons really exist? If so, why haven’t we identified these hypothetical particles yet? How does gravity relate to space and time? Is gravity stronger in other (hidden) dimensions? This essay takes a look at what is known about gravity and contains references to other work on this topic..

36 pages, Kindle Edition

First published September 9, 2013