polychromatic
131Abbey Cwmhir Hall — Abbey Cwm Hir Hall is a neo Elizabethan country house in the Welsh county of Radnorshire. It was built in 1833 for Thomas Wilson on the site of a house built c.1656 for the Fowler family, which was later owned by the Hastings family, Earls of… …
132Diffraction topography — (short: topography ) is an X ray imaging technique based on Bragg diffraction. Diffraction topographic images ( topographs ) record the intensity profile of a beam of X rays (or, sometimes, neutrons) diffracted by a crystal. A topograph thus… …
