Bell

Bell’s theorem is a fundamental principle in quantum physics demonstrating that particles can be connected in ways that instantaneously influence each other, no matter how far apart they are. This phenomenon, called entanglement, suggests that the universe’s behavior cannot be fully explained by local realism—meaning objects have pre-existing properties and nothing travels faster than light. Bell’s theorem provides a way to test whether these quantum connections are real; experiments consistently support the idea that entangled particles are linked in a way that defies classical explanations, revealing the non-intuitive nature of quantum mechanics.