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,
Art Gallery Building Art Gallery Building The Art Gallery Building is a commercial building located at 156 South Washington Street in Constantine, Michigan. It was listed on the National Register of Historic Places in 1980. The building is particularly notable for its cast iron Italianate upper facade - the only such building in Constantine and perhaps the only one in the entire region. The Art Gallery Building was constructed in 1877 for George I. Crossett to house his Crossett Drug Store on the first floor, along with a photographic studio on the second floor. The studios on the second floor led to the