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,
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