Re: To Christians (not an attack, but an honest query)
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"If we had the ability to know positions of particles without using photons then again there would be no randomness, so again we conveniently use the term "randomness" to describe something which is beyond our abilities to detect."
Physicists out there. Is that true?
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No. Photons have nothing to do with it. The uncertainty principle applies to every observable that does not commute. The uncertainty principle is more fundamental than photons disturbing a measurement.
A good exercise to get more insight in the uncertainty principle is to derive it by considering a particle in an infinite square well and use the the Broglie relation. You will get the position/momentum uncertainty without considering photons needed to measure or whatever.
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