Max Planck Institute for the Science of Light. "Towards the quantum of sound." ScienceDaily. ScienceDaily, 18 January 2024. <www.sciencedaily.com / releases / 2024 / 01 / 240118150744.htm>.

From sound "canyons" to temperature inversion layers, we looked at the factors that influence how sound moves in the city.

Scientists at the Max-Planck-Institute for the Science of Light (MPL) have now demonstrated a particularly efficient way in which photons can be entangled with acoustic phonons.

These features affect how air bubbles form in the liquid (bottom left), explaining the variation in the sound of water poured from different heights. Ho-Young Kim et al, APS 2023 ...