Rainbow which a glass prism could separate into the full spectrum of colours, rejecting the theory that the colours were produced by a modification of white light. He also showed that red light is refracted less than blue light, which led to the first scientific explanation of the major features of the rainbow. Newton's corpuscular theory of light was unable to explain supernumerary rainbows, and a satisfactory explanation was not found until Thomas Young realised that light behaves as a wave under certain conditions, and can interfere with itself. Young's work was refined in the 1820s by George Biddell Airy, who
National colours of Italy the first person buried there in over 300 years. An apocryphal story about the history of pizza holds that on 11 June 1889, Neapolitan pizzamaker Raffaele Esposito created a pizza to honour Margherita of Savoy, who was visiting the city. It was garnished with tomatoes, mozzarella, and basil to represent the national colours of Italy, and was named "Pizza Margherita". In 2003, the government of Italy specified the colours using Pantone. The new specification was demonstrated on sample flags displayed at Palazzo Montecitorio; they had a darker tint than the traditional colours, described as having a deeper green, a red