It’s been nearly 50 years since the Viking 1 lander snapped the first image from the surface of Mars. And yet, until recently, that landscape remained silent to the human ear. Now, thanks to two ...

The top layer represents the location of the sound source and the path of sound propagation (A). The bottom layers represent convergence zones with different sound propagation paths (B-F). Sound waves ...

I SUPPOSE that most of those who have listened to (single-engined) aeroplanes in flight must have noticed the highly uneven character of the sound, even at moderate distances. It would seem that the ...

IT is a well-known fact that the propagation of sound in the atmosphere is greatly affected by temperature and wind conditions, yet quantitative data on the actual field of intensity from a sound ...