'''Quantum entanglement''' is when two (or more) [[quantum]] particles or [[waves]] relate to each other, as in taking spins opposite to each other. When they are separated they retain the same opposite spins, and the observation of the spin of one of the states predicts the opposite spin for the other state, even though the [[quantum states]] or particles may have been separated by many miles from each other. | '''Quantum entanglement''' is when two (or more) [[quantum]] particles or [[waves]] relate to each other, as in taking spins opposite to each other. When they are separated they retain the same opposite spins, and the observation of the spin of one of the states predicts the opposite spin for the other state, even though the [[quantum states]] or particles may have been separated by many miles from each other. |