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,
Catalogue of paintings in the National Gallery, London by British artists to and from its collection. Some artists are represented in the collection with more than six artworks, but only a maximum of six per name are listed here. Catalogue of paintings in the National Gallery, London The Catalogue of paintings in the National Gallery, London lists the named painters of the collection of the National Gallery, London, as they were catalogued in 2010 by the Public Catalogue Foundation. The collection contains roughly 2,300 paintings by 750 artists, and only attributed artists are listed here. Painters with more than twenty works in the collection are Jean-Baptiste-Camille Corot, Carlo