Halc's latest activity
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Halc replied to the thread Undergrad Linear vs rotary motion.It measures a proper rotation rate, which is observer invariant. The axis orientation is also proper, effectively 'thataway', which... -
Halc replied to the thread Undergrad Linear vs rotary motion.One of the more precise methods is to use a ring laser gyroscope, which leverages the Sagnac effect to determine rotation rate and axis...
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Halc replied to the thread Undergrad Linear vs rotary motion.Indeed. It takes more coordinates to define a rotating frame (in say Minkowskian spacetime) that it does to define an inertial one...
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Halc replied to the thread Undergrad Linear vs rotary motion.Good example of why proper acceleration is absolute. As for rotation, I suppose it is because the physics of a rotating frame is...