On 2/26/2015 3:24 PM, LizR wrote:
Can you explain the problem a bit more for us dummies? ISTM - probably this just shows I don't understand the problem, but I may as well state my, ahem, position - that all measurements made using a physical apparatus are going to resolve into the position of something, e.g. the position of a pointer or pixels on a display. Is that anything to do with the "position basis" and if so why is that a problem?
I don't think they always involve the position basis. But once we get the measurement in whatever basis we can classical transfer it into a position basis which is an easy way to share it. For example, we can 'see' the momentum of photons provided they are in a certain range. But we use instruments (e.g. grating) to spread them out so the momentum is measured by the location of a spot on film instead of seeing the photon directly and judging its color.
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