How can entropy be reversed

The effect had been predicted, but this was the first time the reversal was achieved in a physical system. Researchers have toyed with the arrow of time before, however. The work could also influence thinking about the origins of the universe. One long-standing puzzle of cosmology is why the universe began in such a low-entropy configuration , allowing entropy to increase throughout the history of the cosmos and, presumably, allowing time to flow.

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Read Later. So the result may also allow a new generation of devices that drive heat from cold regions to hot ones. Ref: arxiv. A solution to P vs NP could unlock countless computational problems—or keep them forever out of reach. The US government is starting a generation-long battle against the threat next-generation computers pose to encryption. Discover special offers, top stories, upcoming events, and more.

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Skip to Content. Interesting work on the fundamentals of time. Deep Dive. By Siobhan Roberts archive page. By Patrick Howell O'Neill archive page. By Clive Thompson archive page.

But the reasons why are complicated—and not all bad news. Asked 2 years, 2 months ago. Active 2 years, 2 months ago. Viewed times. Improve this question. So then that system and our system are really just the system , and we're back to the original problem. Physics cannot answer questions that pose unphysical situations. Does this resolve the issues? Add a comment. Active Oldest Votes. Improve this answer. Erol Bakkalbasi Erol Bakkalbasi 11 1 1 bronze badge.

And seeing that the ground-state vacuum energy could not actually be removed because then there'd be nothing , violating the Heisenberg principle that suggests it in the first place , I guess a still "uncountably large" amount of gifted energy would have to come from another system, which was following thermodynamics.

Which then makes it part of the whole system , collapsing the notion of removing entropy from a closed system. Featured on Meta. Now live: A fully responsive profile.