Mechanics: Ordinary meets quantum

At the quantum level, the atoms that make up matter and the photons that make up light behave in a number of seemingly bizarre ways. Particles can exist in 'superposition,' in more than one state at the same time (as long as we don't look), a situation that permitted Schroedinger's famed cat to be simultaneously alive and dead; matter can be 'entangled' - Albert Einstein called it 'spooky action at a distance' - such that one thing influences another thing, regardless of how far apart the two are...

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