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,
Watts Gallery De Morgan Centre, London, in the summer of 2014, the Watts Gallery and the De Morgan Foundation, a registered charity preserving the work of William De Morgan and Evelyn De Morgan, entered into a collaboration which saw the opening of a long term exhibition in the Richard Jeffries Gallery in the main gallery building. This exhibition includes a number of key works from the De Morgan Collection. Further, since January 2015, the De Morgan Foundation has had its office in the Curator's House, in the grounds of the Watts Gallery. Watts Gallery Watts Gallery – Artists' Village is an art