Quote:
Originally Posted by sjastro
Mark,
An interesting discussion.
The driving force behind behind gravitational waves are the time dependent metric components.
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Yes, interesting indeed.
I said metric as a general comparison between all components within the Einstein Tensor...but if I must be specific, I would say that it is not the "components" either, I believe it would all come down to variations of the derivative values (1st and 2nd derivatives) held within the metric components. Of course the numbers of values vary depending upon how many dimensions we are talking about. 256 for a spacetime metric.
The "components" of the metric, are the mathematical operators, not the values themselves, true?
...I feel that we still don't have an answer to the question, "What is Gravity?" (causally), we haven't as yet discussed a reason why it exists either...I raise that question with trepidation.
I can suggest a cause...a reason...but I don't think that anyone will like it.
Cheers
Mark