Quantum Cheshire Cat: Scientists Separate A Particle From Its 'Grin'

In Lewis Caroll's novel "Alice in Wonderland", the Cheshire Cat could disappear but its grin remained.  Why? Who knows? Like dogs named Checkers and Esther Williams swimming pools, things don't always make sense. Scientifically, that cat was an object separated from its properties - it was a quantum cat. read more

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