Is there an "aether" to determine if an object rotates? Hi, In modern physics aether theories are obsolete, all inertial systems are equivalent. For rotational motion, the situation is different: In a rotating system, it is possible
Is there an "aether" to determine if an object rotates? Hi, In modern physics aether theories are obsolete, all inertial systems are equivalent. For rotational motion, the situation is different: In a rotating system, it is possible to measure the rotation without any outside reference (e.g. by measuring the centripetal force needed to keep a body on its orbit). So there is an objective rest state where a body does not rotate. Does this somehow imply that there must be a "directional aether" throughout the universe that determines when an object does not rotate?