Tag Archives: quantum mechanics

One way to think about quantum operators is as Questions that are asked of a quantum system. Identity operator = “Who are you?” Energy operator = “How much do you weigh?” “What is your spin along the z axis?” and … Continue reading

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Ex Ante / Ex Post Conflicts

M. You live in a society where lovers choose whom to marry based on romance. So you don’t want to give up your right to choose a partner (or no partner at all). But if you actually lived under rules of … Continue reading

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Sub i, sub j

I hope I can say this in a way that makes sense. One kind of mathematical symbology your eyes eventually get used to is the “Σum over all individuals” concept: Yes, at first it’s painful, but eventually it looks no … Continue reading

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Tim Maudlin reformulates topology using open lines as the basis rather than open sets. He thinks this sheds some light on the “arrow of time” question (why does time only move forward, when physical equations can be used to postdict … Continue reading

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http://www.cs.ox.ac.uk/quantum/talksarchive/clap1/clap1-chrisisham.avi Is there really such a thing as a point? Well, not really…. Ask any of our undergraduates, why the real numbers? Can you say there’s something √π centimetres away from here?—Well, not really, it’s an approximation….—An approximation to what? “We’re not … Continue reading

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The central message that Bohr and von Neumann taught us about the Standard Quantum Logic is that it can be viewed as a manifold of interlocking perspectives that cannot be embedded into a single perspective. Hence, the perspectives cannot be … Continue reading

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Superposition of Feelings

The act of writing is like the collapse of a quantum waveform. So many things are in your mind, interacting with each other, unsaid. Many truths — some at odds with others — could be spun into a thread. But whatever … Continue reading

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