Info Search results 1 items matching your search terms. Filter the results. Item type Select All/None Collection Page Event Fellow File Form Folder Link News Item Collection (old-style) XMLTransformer New items since Yesterday Last week Last month Ever Sort by relevance · date (newest first) · alphabetically Dinner Speech - Stefan Buhmann What happens when we switch off the light: from quantum vacuum to the Casimir effect Located in Events / Tea Time Conversations