That's pretty much it. This is the result of a kid's book in which a boy goes searching through parallel universes to try and find his dead mother, and there are explanations of Schrodinger's Cat and quantum entanglement along the way.

I am an arts graduate and clueless: the project is supposed to fit into a shoebox. Any help will be much appreciated.


closed as unclear what you're asking by user36790, David Z Oct 19 '16 at 13:14

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    $\begingroup$ I'm voting to close this question as off-topic because there is no actual conceptual query in it. $\endgroup$ – user36790 Oct 19 '16 at 13:05
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    $\begingroup$ I think this could be turned into a reasonable conceptual question: does such a demonstration exist, or is quantum mechanics somehow too subtle for a nine-year-old to discover in a shoebox-sized apparatus made of household stuff? However in its current form this may be a list question. $\endgroup$ – rob Oct 19 '16 at 13:22
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    $\begingroup$ One idea: it's pretty easy to build a double-slit interferometer using a laser pointer and a staple or a hair or a microscope slide. If you polarize the light differently on the two sides of the slit, the interference pattern is destroyed. $\endgroup$ – rob Oct 19 '16 at 13:31
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    $\begingroup$ Second idea: with a diffraction grating spectrometer, you can observe discrete emission spectra from lamps and the absorption spectrum of sunlight. The line spectra can't be explained without quantum mechanics. $\endgroup$ – rob Oct 19 '16 at 13:37
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    $\begingroup$ using a laser pointer and a staple or a hair or a microscope slide or a nit comb or pencil leads or... $\endgroup$ – Christoph Oct 19 '16 at 13:43