Whispering-gallery wave known as surface plasmons has been demonstrated in the form of whispering-gallery waves, and likewise for exciton-polaritons in semiconductors. Galleries simultaneously containing both acoustic and optical whispering-gallery waves have also been made, exhibiting very strong mode coupling and coherent effects. Hybrid solid-fluid-optical whispering-gallery structures have been observed as well. Whispering-gallery wave Whispering-gallery waves, or whispering-gallery modes, are a type of wave that can travel around a concave surface. Originally discovered for sound waves in the whispering gallery of St Paul’s Cathedral, they can exist for light and for other waves, with important applications in nondestructive testing, lasing, cooling and sensing,
Whispering (song) practice in jazz, Diz front-ran the static V chords with ii chords (a "static chord" is a chord that doesn't change), setting up a series of ii–V progressions, which creates more structure for improvising. The ii chord has similar properties to a iv chord (as in the iv–V progression of church harmony). Because "Groovin' High" was a contrafact, performers, publishers, and record companies did not have to pay royalties to the original composers. Moreover, the contrafacted rendition followed a unified bebop convention — a series of ii–V chord changes with a ii–V–I turnaround — for jazz artists. Whispering (song) "Whispering"