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,
Bethlem Gallery Bethlem Gallery The Bethlem Gallery is an art gallery in Beckenham, Bromley, England. It was established in 1997 to support and exhibit artists who are current or former patients of the South London and Maudsley NHS Foundation Trust. The gallery is housed in an Art Deco building shared with the Bethlem Museum of the Mind, with exhibits about the history of Bethlem Royal Hospital. The gallery has a small artist-led team to manage and facilitate it. This team support and encourage artists who may feel excluded from artistic endeavour otherwise. The gallery provides facilities for collaboration, experimentation, and skills exchange.