Unusual sound waves discovered in quantum liquids
Friday, July 20, 2018 - 02:30
in Physics & Chemistry
Ordinary sound waves—small oscillations of density—can propagate through all fluids, causing the molecules in the fluid to compress at regular intervals. Now physicists have theoretically shown that in one-dimensional quantum fluids not one, but two types of sound waves can propagate. Both types of waves move at approximately the same speed, but are combinations of density waves and temperature waves.