The Dennis Gabor Medal and Prize (previously the Duddell Medal and Prize until 2008) is a prize awarded biannually by the Institute of Physics for distinguished contributions to the application of physics in an industrial, commercial or business context. The medal is made of silver and is accompanied by a prize and a certificate. In 2008 the award was renamed in honour of Dennis Gabor, the Hungarian – British physicist who developed holography, for which he received the 1971 Nobel Prize in Physics. The prize also switched to being awarded in alternate even-numbered years.