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are observers stationary to the speed of gravity

 
 
Reply Sat 1 Nov, 2014 08:39 am
Ok is gravity the same as c. And when we measure its speed are we stationary to that speed as in the measuring of c the speed of light.
 
maxdancona
 
  1  
Reply Sat 1 Nov, 2014 08:45 am
@martinies,
I am not sure what question you are asking.

"Observers" are stationary by definition. You have to establish a frame of reference. We use the word "observer" to determine what isn't moving, and then make all of our calculations and measurements based on this assumption.
dalehileman
 
  1  
Reply Sat 1 Nov, 2014 10:17 am
@martinies,
I'm not sure either Marty. Gravity is a force while c is a velocity
maxdancona
 
  1  
Reply Sat 1 Nov, 2014 10:41 am
@dalehileman,
I understood that part. Gravity travels at the speed of light (c).
dalehileman
 
  0  
Reply Sat 1 Nov, 2014 10:49 am
@maxdancona,
Aha thanks Max, of course. By the way I understand there's some controversy about that and so I wonder if you might have any further input. Logically it should travel at c don't you suppose
mark noble
 
  0  
Reply Sat 1 Nov, 2014 09:23 pm
@dalehileman,
gravity doesn't travel at any speed.
martinies
 
  0  
Reply Sun 2 Nov, 2014 03:41 am
@mark noble,
Hows that . Gravity dosnt travel at any speed.what about the event horizion of an expanding universe then . Humm
contrex
 
  1  
Reply Sun 2 Nov, 2014 05:39 am
@martinies,
martinies wrote:

Hows that . Gravity dosnt travel at any speed.what about the event horizion of an expanding universe then . Humm

General relativity predicts that gravitational radiation should exist and propagate as a wave at lightspeed: a slowly evolving and weak gravitational field will produce, according to general relativity, effects like those of Newtonian gravitation. In September 2002, Sergei Kopeikin and Edward Fomalont announced that they had made an indirect measurement of the speed of gravity, using their data from VLBI measurement of the retarded position of Jupiter on its orbit during Jupiter's transit across the line-of-sight of the bright radio source quasar QSO J0842+1835. Kopeikin and Fomalont concluded that the speed of gravity is between 0.8 and 1.2 times the speed of light, which would be fully consistent with the theoretical prediction of general relativity that the speed of gravity is exactly the same as the speed of light.
0 Replies
 
martinies
 
  0  
Reply Sun 2 Nov, 2014 12:14 pm
@maxdancona,
When we measure c our point of reference is our self . Our self is essentially our consciouness. So when we mearsure c from what ever ref frame our consciousness is considered to be stationary to the source independent photon. In other words the photons nonrest state makes our consciousness stationary to it as the observer.
contrex
 
  3  
Reply Sun 2 Nov, 2014 01:36 pm
@martinies,
martinies wrote:

When we measure c our point of reference is our self . Our self is essentially our consciouness. So when we mearsure c from what ever ref frame our consciousness is considered to be stationary to the source independent photon. In other words the photons nonrest state makes our consciousness stationary to it as the observer.

This is just hand-waving.
0 Replies
 
mark noble
 
  1  
Reply Mon 3 Nov, 2014 06:16 pm
@martinies,
If everthing is travelling at the same speed (And it is) How can it be measured, by that 'within its confines' that it is travelling at all?
Relativity is relative, is it not?
martinies
 
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Reply Tue 4 Nov, 2014 09:41 am
@mark noble,
See where you are coming from . Reckon its about rate of change in forms of energy.
0 Replies
 
HesDeltanCaptain
 
  1  
Reply Wed 5 Aug, 2015 10:57 am
@martinies,
Strictly speaking, there's no such thing as a stationary observer since everyone and everything in the universe is in motion relative to any point. Fabric of space-time itself is in motion. Earth's in motion orbiting the Sun, Sun in motion around the galactic center, and the Milky Way in motion through the universe. Plus of course everyone's body being made of atoms is also in motion (if we stopped we'd be at Absolute Zero and quite dead.) Smile
martinies
 
  1  
Reply Wed 5 Aug, 2015 11:19 am
@HesDeltanCaptain,
You are right captain in every respect but one and that one thing is consciousness. I reckon consciousness is sourced by the brain and it consciousness is the one thing that aint moving because its not local to the event. Look up quantum consciousness and the nonlocality of consciousness.
0 Replies
 
 

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