someHerrings
Einstein's Ring: Experiment to Measure the Accelerational Blue/Red-shift Produced by a Rotating Glass Annulus
An imagined experiment to use phosphorescent material to measure the accelerational blue/red-shift predicted by the Equivalence Principle.
See: en.wikipedia.org/wiki/Pound%E2%80%93Rebka_experiment
The color differences in the diagram are exaggerated for clarity.
It is assumed (among other things) that the index of refraction of the glass can be neglected.
To make the emission as narrow as possible, the cylindrical annulus containing the ring of phosphorescent material would be cooled while the phosphor was being "charged" and during the experiment.
Einstein's Ring: Experiment to Measure the Accelerational Blue/Red-shift Produced by a Rotating Glass Annulus
An imagined experiment to use phosphorescent material to measure the accelerational blue/red-shift predicted by the Equivalence Principle.
See: en.wikipedia.org/wiki/Pound%E2%80%93Rebka_experiment
The color differences in the diagram are exaggerated for clarity.
It is assumed (among other things) that the index of refraction of the glass can be neglected.
To make the emission as narrow as possible, the cylindrical annulus containing the ring of phosphorescent material would be cooled while the phosphor was being "charged" and during the experiment.