Or, to put it more precisely: That entropy must increase in every closed system. Ordered structures lose their order, regular ice crystals turn into water, porcelain vases are broken up into shards.

New research shows that the second law of thermodynamics, which states entropy increases over time, also applies to closed ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one physicist says he has resolved them.

Entropy always increases, but in quantum systems, traditional entropy measures seem constant. TU Wien researchers resolved this paradox by considering Shannon entropy, which accounts for the ...

Vanderbilt University physicist Lorenzo Gavassino isn't so sure this is as big an obstacle as time-traveler pessimists have ...

Professor Brian Cox explains the concept of entropy and the arrow of time ... This clip is useful for students of Physics or Chemistry. It can help explain why travelling backwards in time ...

The second law of thermodynamics demands that the entropy of any closed macroscopic system should never decrease. The laws of physics naturally drive systems towards states of increasing disorder ...

Protons are far from simple particles — they are swirling cauldrons of quarks, gluons, and quantum entanglement. Scientists ...

This week, astronomers reported the discovery of a super-Earth potentially capable of sustaining life, occupying an eccentric orbit around its star that oscillates in and out of the habitable zone.