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“In fact, the mere act of opening the box will determine the state of the cat, although in this case there were three determinate states the cat could be in: these being Alive, Dead, and Bloody Furious.” -Terry Pratchett
Quantum mechanics has been described as the spookiest of all the sciences, since it’s by far the most divorced from our intuitive reality and everyday experiences. Even though we’ve been studying it for 100 years, there are still mysteries lurking in quantum phenomena still being uncovered.
Image credit: the LEP collaboration and various sub-collaborations, 2005, via http://arxiv.org/abs/hep-ex/0509008. Precision Electroweak Measurements on the Z Resonance. Note that the Z-particle appears with a “width” in energy.
Yet many of the popular quantum stories people tell – “spooky” action at a distance, Schrödinger’s cat paradox, that everything is discrete and that Einstein never believed it – are actually way off base.
A quantum optics setup. Image credit: Matthew Broome, winner of the Australian Research Council’s photo & data competition from the Centre for quantum computation and communication technology. Via http://cqc2t.org/node/6026.