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IPFS News Link • Science

A New Theory for Systems That Defy Newton's Third Law

• arclein

Newton's third law tells us that for every action, there's an equal reaction going the opposite way. It's been reassuring us for 400 years, explaining why we don't fall through the floor (the floor pushes up on us too), and why paddling a boat makes it glide through water. When a system is in equilibrium, no energy goes in or out and such reciprocity is the rule. Mathematically, these systems are elegantly described with statistical mechanics, the branch of physics that explains how collections of objects behave. This allows researchers to fully model the conditions that give rise to phase transitions in matter, when one state of matter transforms into another, such as when water freezes.


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