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 the Czech Republic National colours of the Czech Republic The national colours of the Czech Republic () are one of the national symbols of the Czech Republic, which officially represent the Czech Republic. The colours forming tricolour are in the following order: white, red and blue. The national colours come from the flag of the Czech Republic. Traditional colours of the Czech lands were white and red. These colours were derived from the Bohemian coat of arms, but after Czechoslovakia has been established, the blue colour was added to symbolize colours of Slovakia and distinguish colours from the Polish colours. During Nazi Germany