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
Ferens Art Gallery Ferens Art Gallery The Ferens Art Gallery is an art gallery in the English city of Kingston upon Hull. The site and money for the gallery were donated to the city by Thomas Ferens, after whom it is named. The architects were S. N. Cooke and E. C. Davies. Opened in 1927, it was restored and extended in 1991. The gallery features an extensive array of both permanent collections and roving exhibitions. Among the exhibits is a portrait of an unknown woman by Frans Hals. The building also houses a children's gallery and a popular cafe. The building is now