What makes measurement possible in the physical world?

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The discussion centers on the fundamental nature of measurement in physics, arguing that observable parameters are inherently interdependent and cannot be defined in isolation. It posits that every measurement requires the context of other measurable parameters, suggesting a closed system of observable characteristics in the universe. The conversation highlights the inadequacy of current theories, like Relativity and Quantum mechanics, in addressing what makes measurement possible. It also touches on the philosophical implications of defining properties, drawing parallels to language and circular definitions. Ultimately, the dialogue emphasizes the need for a deeper understanding of the structure that allows for observability in physical systems.
  • #91
apeiron said:
Clearly, gravity is a lightspeed interaction itself. But measurable changes in gravitational potential are due to the local motions of masses - so tied to their capacity to be at rest and unchanging.

I believe that's an assumption/hypothesis which hasn't any data to support it.
 
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  • #92
rewebster said:
I believe that's an assumption/hypothesis which hasn't any data to support it.

OK, the experimental verification is still in question (http://www.space.com/scienceastronomy/gravity_speed_030116.html ).

But it is a reasonable assumption in most eyes. And there is some data, even if it is being questioned.

Or are you offering an argument that it has some different value? I would be interested in the shape of that argument.
 
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  • #93
apeiron said:
OK, the experimental verification is still in question (http://www.space.com/scienceastronomy/gravity_speed_030116.html ).

But it is a reasonable assumption in most eyes. And there is some data, even if it is being questioned.

Or are you offering an argument that it has some different value? I would be interested in the shape of that argument.

Can't...

the forum doesn't allow personal theories to be posted
 
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  • #94
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