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 DC government relations consultants Lois Starkey and Bill Gilmartin. The new owners shifted Gallery 30's primary focus from books back to local and regional art and further diversified the gallery's collection of artisan crafts. Throughout the 1990s, Starkey and Gilmartin also concentrated on deepening the business's roots in the Gettysburg community by regularly hosting book signings, art contests and other family-friendly events. In August 2007, Gallery 30 and its historic building were acquired by Pennsylvania native Linda Atiyeh. Atiyeh enlarged Gallery 30's selection of Pennsylvania-made artisan crafts, added handcrafted jewelry by both local and international artists and refined Gallery 30's