thermodynamics

A new study reports that Maxwell's demon, the famous thought experiment in thermodynamics, has been shown capable of exploiting hidden information to seemingly violate the second law of physics. Researchers say the finding deepens understanding of how information and energy interact in microscopic systems, renewing a debate that has run since the paradox was first proposed in the nineteenth century.

Physicists report they have drawn extra energy from what they describe as a hidden memory within a thermal bath, a system where conventional thermodynamics assumes the environment carries no record of past interactions. If confirmed, the finding would refine how scientists understand heat exchange in small quantum systems, though details of the experiment and its wider significance remain limited.

The 'meltwater motor' is drawing attention, with an American Scientist piece on the concept circulating widely. The device harnesses energy from melting ice or temperature differences created by meltwater. Discussions centre on how such a mechanism could work and what it might imply for renewable energy or thermodynamics. Beyond the headline and the science magazine coverage, few concrete details about applications or developments are available.

Researchers Iason Anastasios Sofos, Andrew Hallam and Jiannis Pachos have published a new open-access paper in SciPost Physics Core examining entanglement and apparent thermality in simulated black holes. The study, appearing in volume 9 of the journal, is associated with the University of Leeds and is freely available to readers, drawing attention from the physics community.