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19 février 2021
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Relativism Natural philosophy Philosophy, NaturalCiter ce document
Alexander Afriat, « The Sagnac effect on a cylinder », HAL-SHS : histoire, philosophie et sociologie des sciences et des techniques, ID : 10670/1.o4uhs1
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By confining our attention to the world-cylinder above a circle on the rotating disk we avoid broader integrability issues that just cause confusion. A rate of rotation foliates the cylinder into timelike spirals, but also into the simultaneity spirals hyperbolically orthogonal to them; together the two foliations give rise to all sorts of temporal absurdities. Rotation is troublesome on its own; the light added by Sagnac just makes things worse, ‘shedding light’ on the problems already present.