The tritone has been blamed for chaos, banned by choirs, and embraced by metalheads. Here’s what the 'devil's interval' ...

Williams, best known for his film work, has a parallel career in classical music. His concerto, haunted by the ghosts of jazz past, is premiering at Tanglewood.

Unprecedented ultrastable free-space optical clock networks will promote widespread applications such as navigation, gravitational sensing, and spectroscopy. However, for optical frequency comparison, ...