Whispering-gallery wave 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, as well as in astronomy. Whispering-gallery waves were first explained for the case of St Paul's Cathedral circa 1878 by Lord Rayleigh, who revised a previous misconception that whispers could be heard across the dome but not at any intermediate position. He explained the phenomenon of travelling whispers with
Gallery 30 Gallery 30's book department in an advisory capacity, Gisick took Gallery 30's selection in a different direction with the launch of a literary project that he dubbed “Man to Man Books.” By 1992 Gisick had compiled “the largest catalogue of men’s studies books available” in the United States, prompting one publisher to call Gallery 30 “the men’s bookstore for the nation.” During his time as owner, Gisick also made changes to Gallery 30's art department, adding handcrafted gold and sterling silver jewelry and more contemporary artisan crafts. In May 1993, Gallery 30 and its historic building were purchased by Washington,