- #1
marcosschiavi
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Considerer a closed box into space:
• In constant acceleration.
• Turning around its axis.
Einstein used the first case as a thought experiment (http://galileo.phys.virginia.edu/classes/252/mass_and_energy.html) that led to the general theory of relativity: the occupant of the box could be considered (locally) under the action of a gravitational field.
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We could consider the "gravity" as seen by the accelerated reference a fictitious force, but is not also fictitious the magnetic field (http://galileo.phys.virginia.edu/classes/252/rel_el_mag.html) that arises when a charge moves? We could postulate a field that arises when a mass is accelerated (See note below)…
My point is: why a framework that rotates can’t be considered to be a good one? If the rest of the universe didn’t exist could someone say that it does rotate? It rotates in relation to what? Does it make sense to say that the universe as a whole rotates? (how could we know if it does?)
However, leaving aside the centrifugal force (we could postulate a field that arises when a mass is rotated), for such a rotating reference frame the speed of light is not a limit. The velocity of a distant star, for instance, would seem to be near infinite.
So, would not the value of the speed of light be a result from the presence of the rest of the universe? If so, maybe the presence of a large mass could change the speed of light constant!
Note: My law of gravitation would be something like this: "all accelerated body generates a gravitational field proportional to its mass". Thus, given a rocket and an static observer, the gravity felt by the astronaut would be much greater than that perceived by the observer, because for the first the whole universe is being accelerated while for the second only the rocket :)
• In constant acceleration.
• Turning around its axis.
Einstein used the first case as a thought experiment (http://galileo.phys.virginia.edu/classes/252/mass_and_energy.html) that led to the general theory of relativity: the occupant of the box could be considered (locally) under the action of a gravitational field.
.
We could consider the "gravity" as seen by the accelerated reference a fictitious force, but is not also fictitious the magnetic field (http://galileo.phys.virginia.edu/classes/252/rel_el_mag.html) that arises when a charge moves? We could postulate a field that arises when a mass is accelerated (See note below)…
My point is: why a framework that rotates can’t be considered to be a good one? If the rest of the universe didn’t exist could someone say that it does rotate? It rotates in relation to what? Does it make sense to say that the universe as a whole rotates? (how could we know if it does?)
However, leaving aside the centrifugal force (we could postulate a field that arises when a mass is rotated), for such a rotating reference frame the speed of light is not a limit. The velocity of a distant star, for instance, would seem to be near infinite.
So, would not the value of the speed of light be a result from the presence of the rest of the universe? If so, maybe the presence of a large mass could change the speed of light constant!
Note: My law of gravitation would be something like this: "all accelerated body generates a gravitational field proportional to its mass". Thus, given a rocket and an static observer, the gravity felt by the astronaut would be much greater than that perceived by the observer, because for the first the whole universe is being accelerated while for the second only the rocket :)
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