Month: March 2018

Quantum uncertainty is not caused by measurements

Quantum uncertainty is not caused by measurements

TL;DR – The uncertainty relationship in quantum mechanics exists before and independently of measurements. Some books still perpetuate the idea that the uncertainty introduced by quantum mechanics is caused by measurements. Either as an observer effect (i.e. the measurement causes the uncertainty) or as an observed relationship (i.e. our measurements are limited by that relationships). …

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Determinism and quantum mechanics

Determinism and quantum mechanics

TL;DR – The Schrodinger equation can be seen as the deterministic and reversible limit of the projection (i.e. collapse) associated with a measurement. Quantum mechanics comes with two ways to go from an initial to a final state. The first is the Schrodinger equation that represents time evolution and the second is the projection (or …

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Many Worlds and Television Interference

Many Worlds and Television Interference

TL;DR – There may be infinitely many parallel worlds but there is nothing to be detected. A friend of mine is really into science fiction. “Did you know that there are infinite parallel worlds?” “And that there are infinitely many you and me, each a little bit different?” “And one day we will be able …

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