Metaphysical Thoughts - Making Quantum Mechanics Logical
August 31, 2026: QED and vacuum polarization – The physics blog of Heikki Tuuri.
Saturday, May 11, 2024
Better rubber sheet model of gravity: prevent horizontal movement of rubber
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We have a tense horizontal rubber membrane. We can put weights on it, and springs between weights. The springs model pressure. ---|-----...
Friday, May 10, 2024
What metric variations are allowed in general relativity?
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UPDATE May 21, 2024: The form of the lagrangian L M has to be kinetic energy - potential energy and the variation δg has to be res...
Monday, May 6, 2024
Shear stress: why do the Einstein equations fail?
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On November 5, 2023 we tentatively analyzed why the Einstein field equations "break" in the case of a pressure change. By breaking...
Saturday, May 4, 2024
Thin disk: the z metric is strange in general relativity
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We will use our April 13, 2024 formulae for a rotationally symmetric system (a generalized "cylinder"). As usual, we assume that t...
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