University of Utah physicists developed small devices that turn heat into sound and then into electricity. The technology holds promise for changing waste heat into electricity, harnessing solar ...

Heat usually follows a predictable path—spreading outward from a hot source until it dissipates evenly. But in some exotic materials, heat doesn’t just spread; it sloshes back and forth like a wave.

Physicists at MIT have spotted the second sound of a superfluid. Besides being pleasantly alliterative, the phenomenon may explain how heat moves through certain rare materials on Earth and deep in ...

Physicists developed small devices that turn heat into sound and then into electricity. The technology holds promise for changing waste heat into electricity, harnessing solar energy and cooling ...

HERE'S HOW IT WORKS: A palm-sized, cylinder-shaped resonator contains a stack of material with a large surface area such as metal or plastic plates, or fibers made of glass, cotton or steel wool. The ...