Quantum Engine Blasts Past High Gear

See allHide authors and affiliations

Science  18 Jan 2002:
Vol. 295, Issue 5554, pp. 425
DOI: 10.1126/science.295.5554.425a

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


The laws of thermodynamics set clear limits on how much work engines can squeeze from a given energy input. But take those classical axioms and add quantum mechanics, and unusual things can happen. A physicist has found that in theory he could take the hot exhaust from one kind of heat engine and drive a laser with it to do more work than classical thermodynamics allows.