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
Faras Gallery at the National Museum in Warsaw The modernisation was funded by Wojciech Pawłowski. The Faras Gallery was reopened under the auspices of UNESCO and the Minister of Culture and National Heritage Małgorzata Omilanowska. Room I presents objects found at the Faras Cathedral, such as the frieze fragment from the apse of the First Cathedral; the founding inscription of bishop Paulos (commemorating the renovation of the Cathedral in 707 AD, "a holy Catholic place and a church of the Apostles of God"), stone blocks with inscriptions, and other elements. These objects are directly related to the history of the cathedral and its numerous building stages, happening from