Spookily, two particles can become linked such that measuring one instantly determines the state of the other, even if they are light-years apart. This “spooky action at a distance” (Einstein’s phrase) is now experimentally verified and is the basis for quantum computing and cryptography.
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: A detailed 82-page introductory text suitable for students starting the subject FreeBookCentre - T. Stantcheva Essential Concepts & Radioactivity Spookily, two particles can become linked such that
While relativity overhauled the very large and fast, Quantum Mechanics transformed our view of the very small. The classical certainty of particle trajectories dissolved into a probabilistic haze. modern physics notes pdf