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Originally Posted by MJA  Obviously the flaw in the comprehension of General Relativity is that it was a mathematical solution that fails simple comprehension, or rather comprehension of any degree. But I'll try! |
MJA ... I agree with this. It is a mathamatical solution that does not provide a logical concept. Comprehension is up to the us, not the theory.
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Originally Posted by MJA Newtonian mechanics mathematically explained or tried to explain gravity as interactive forces between moving bodies in space. |
Yes. I agree
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Originally Posted by MJA Einstein defined it mathematically as the relationship between a body effecting space or time which can effect other bodies in space or time. |
Yes. I agree
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Originally Posted by MJA Or more simply,
In Newton's gravity the Sun has a gravitational force or effect on the Earth.
In Einsteinian gravity, the Sun effects spacetime which effects Earth.
Is that right?
If so, what's the big difference? |
There is a subtle difference which becomes much less subtle as objects approach light speed. In fact it becomes a BIG DIFFERENCE. Thats the big difference.
Instead of thinking of the Gravity of a Star as being some kind of 'thing' that reaches out to affect any passing object, just think of it the other way.
Think of all objects as having stored potential that is inhibited by the resistance of the objects 'lack of mass'. The more mass, the free'er it is to shake off its inhibitions and express its potential. Stars contain enormous amounts of mass, so in their presence an object is free to break all inhibitions ..... and it now begins to travel thru a different route in Spacetime ... a less inhibited one, a chute, its spends less of its precious resource 'time' and gobbles up more of the 'resource' space ... the ratios have changed
As you can see, or perhaps you can't because I admit this is not the best description, there is no 'force' acting on it just a different degree of freedom.
cool bananas ... greg
MJA ... there are heaps of books where you can read up on this ... some provide excellent concepts ..... but the equations don't change