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,
Renwick Gallery Renwick Gallery The Renwick Gallery is a branch of the Smithsonian American Art Museum, located in Washington, D.C., and focuses on American craft and decorative arts from the 19th to the 21st century. It is housed in a National Historic Landmark building that was begun in 1859 on Pennsylvania Avenue and originally housed the Corcoran Gallery of Art (now one block from the White House and across the street from the Old Executive Office Building). When it was built in 1859, it was known as "the American Louvre". The Renwick Gallery building was originally built to be Washington, D.C.'s first