How Human Sperm Defies Newton's Third Law Of Motion

Human sperm has been found to defy Newton's third law of motion.

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In a groundbreaking study, researchers have discovered that human sperm may violate one of the most fundamental principles of physics—Newton's third law of motion, which states that every action has an equal and opposite reaction. According to the study, the way sperm swim involves nonreciprocal internal forces, enabling them to move forward in ways that classical physics cannot fully explain.