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
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