Quote:
Originally Posted by xelasnave
So what is gravity???
I still dont know after all the years I have read stuff on it.
alex  |
Alex,
"What is Gravity", gravity is a subject far too big to learn from a discussion forum. It needs to be described in detail and systematically. It also pays to know some history, ie, what was Einstein looking for...why did he look toward Poisson's equations first, and what is curvature (I feel this is the biggest piece of the puzzle)?? Start small, what did Newton say, then geometry needs to be included because it's a field of acceleration...there are so many things.
I have posted this link before.
http://www.youtube.com/watch?v=hbmf0bB38h0
If you cannot understand the math, don't worry, just understand his explanations for the functions.
If you watch this brilliant series (12 parts, 20 hours or so), you WILL have a new appreciation for gravitation, and, how SR fits in.
People pay a lot of money for this type of information, delivered this way.
Unfortunately/fortunately, not much comes from little effort, so take my advice on this, just give it a try...at least until the end of lesson 3.
And it's delivered by Leonard Susskind, what more could you want for free???
Weigh it up, what have you got to loose, against what have you got to gain?
At the end of the day, you might not have all the pieces, or even have them correct (that's me for sure), BUT, you will have an appreciation of what it actually is.
I dare you to put the time in!!!
Mark