Proper Physical Quantities: Understanding the Fundamentals

[bernhard.rothenstein]

how would you define a proper physical quantity?


the best things a physicist can offer to another one are information sndf criticism

 

[masudr]

Under which model of reality? QM? SR? Something else?

For SR, I'd say it must at least be represented by a tensor field of some rank on spacetime.

For QM, I'd say it'd have to be represented by a Hermitian operator defined on the Hilbert space of states of the system under consideration.

 

[bernhard.rothenstein]

Under which model of reality? QM? SR? Something else?

For SR, I'd say it must at least be represented by a tensor field of some rank on spacetime.

For QM, I'd say it'd have to be represented by a Hermitian operator defined on the Hilbert space of states of the system under consideration.

special relativity, for beginers!

 

[Andrew Mason]

special relativity, for beginers!

A proper physical quantity of an object is the quantity (distance, time, mass) measured in the frame of reference that is at rest with respect to the object.

AM

 

[bernhard.rothenstein]

proper pjhysical quantity

A proper physical quantity of an object is the quantity (distance, time, mass) measured in the frame of reference that is at rest with respect to the object.

AM

Thanks. Is the combination of proper physical quantities a proper physical quantity as well (e.g. the electric field measured in the rest frame of the charges that generates it).