- #1
Haths
- 33
- 0
I think this belongs here, while not relativistic, is is about objects moving relative to one another.
Summery:
This stems from the description of 'Dark Energy' in a mathamatical context to show that you can place a 'center of the universe' at any point in space, and the accelaration vector between two bodies is inderpendant of the position vectors to this 'arbitary center of the universe'.
Body:
The presumption is that there exsits a 'center of the universe', and that from it we can draw a diagram
A
...\
...\___________________
...B......C
Where A is our 'center of the universe', B is one body, C is the other body. There is a radial distances rB and rC respectfully, and the magnitude of radial accelaration from this 'center of the universe' is proportional to these distances.
From B, an oberserver notes that C is accelerating away from him at some accelaration a'C and reversely, from C an observer notes that B is accelerating away from him at some accelaration a'B
How do I show that no matter where I place A, the magnitude of accelaration is not dependant on the 'center of the universe'?
I thought you could describe a'C and a'B as;
a'C = rCK*cos( 1/2 n ) - rBK
a'B = rBK*cos( 1/2 n ) - rCK
Where K is the constant of proportionality and n is the angle between the bodies. Using the geometry between them. I guess that the cosine formula is now somehow incorperated into this;
a2=b2+c2-2bc*CosA
Because there are simmilarities in both equations, but I'm not sure where to go from here in the proof...
Haths
Summery:
This stems from the description of 'Dark Energy' in a mathamatical context to show that you can place a 'center of the universe' at any point in space, and the accelaration vector between two bodies is inderpendant of the position vectors to this 'arbitary center of the universe'.
Body:
The presumption is that there exsits a 'center of the universe', and that from it we can draw a diagram
A
...\
...\___________________
...B......C
Where A is our 'center of the universe', B is one body, C is the other body. There is a radial distances rB and rC respectfully, and the magnitude of radial accelaration from this 'center of the universe' is proportional to these distances.
From B, an oberserver notes that C is accelerating away from him at some accelaration a'C and reversely, from C an observer notes that B is accelerating away from him at some accelaration a'B
How do I show that no matter where I place A, the magnitude of accelaration is not dependant on the 'center of the universe'?
I thought you could describe a'C and a'B as;
a'C = rCK*cos( 1/2 n ) - rBK
a'B = rBK*cos( 1/2 n ) - rCK
Where K is the constant of proportionality and n is the angle between the bodies. Using the geometry between them. I guess that the cosine formula is now somehow incorperated into this;
a2=b2+c2-2bc*CosA
Because there are simmilarities in both equations, but I'm not sure where to go from here in the proof...
Haths