Where can a pure inertial system be found?

Answer 1

The values found in E = mc2, and m = E/c2 would qualify for that, as would c2 = E/m, which is the equation for a gravitational field. The c2 value is the basis of all physical existence. Were all mass of our universe to be reduced to this value, then the totality of all existence would become one-dimensional, which is what you, apparently, are seeking.

http://360.yahoo.com/noddarc there is a short writing "Magnetism - Gravity" that describes why this is true.

Answer 2

If such a thing exist, then it is the long sought for absolute reference frame. Relativity will disappear because we can all correlate ourselves to this something.

Here's the why of it being an impossibilty. A pure inertial system has a zero net force acting on brought about by the force of gravity acting it on due to all the masses around it. Since the number of masses surrounding anything is almost infinite (to me infinite) it is impossible for us to compute whether something is a pure inertial system or not. Even if it exist (which I doubt) and is right in front of our noses we wont be able to recognize it.

In thermodynamics there is a law that states absolute zero degree temperature is impossible to reach. It's because nobody can compel something not to move. By the mere fact that it is moving, its temperature is not zero because temperature is an indicator of how energitic the particle is. A pure inertial system is necessarilly at rest because if it moves it will change the whole configuration of the universe where it is the pure inertial system. So a pure inertial system is a violation of the 3rd law of thermodynamics.

Answer 3

What do you mean by "pure intertial system"? If you mean one that is not accelerated to at least some degree by outside forces, there is no such thing anywhere in the universe: gravitation is universal.

Answer 4

The universe. Since it is composed of everything, it has no outside effects.

Answer 5

Hi. Earth and Sun.