Nacionalni portal odprte znanosti

This talk derives fundamental limits to the accuracy with which clocks and signals - e.g. the global positioning system (GPS) - can measure space and time. By combining quantum limits to the accuracy of measurement with the requirement that the local energy density of clocks and signals be less than ...

These nine panelists describe ways in which the Second Law of Thermodynamics can be stretched, or applied in less traditional ways. Adrian Bejan has constructed a law that “covers every configuration in physics, from animate, to inanimate, to us, the societal." Bejan demonstrates how his law describ ...

In this valedictory panel to the two-day symposium, 10 speakers offer brief takes on how the Second Law of Thermodynamics might prove useful in seeking answers to our current energy challenge. Even before the oil embargo of 1973, Thomas Widmer recalls, Joe Keenan and his MIT colleagues wrote of an ...

The nine panelists set out to address, very briefly, some of the key questions of the symposium. Seth Lloyd discusses the Maxwell demon paradox and the spin-echo effect, and how in some cases, in an apparent violation of the Second Law of Thermodynamics “entropy goes up and whoa, goes down then up. ...