The Physics of the Doppler Effect, Represented as Tiny Balls Why do vehicles coming toward you (and moving away) make that characteristic sound? Let's explore.

THE Doppler effect in the resonance radiation of mercury λ 2537 A. has been studied by producing a pencil of mercury positive rays by the usual method 1, in a Wine's type of discharge tube ...

A team including researchers from The University of Manchester’s National Graphene Institute (NGI) has revealed that sonic boom and Doppler-shifted sound waves can be created in a graphene transistor, ...