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London, GWR poster, 1938

Poster produced for Great Western Railway (GWR) to promote rail travel to London. The poster shows an aerial view of the Tower of London. Artwork by Frank Henry Mason (1876-1965), who was educated at HMS Conway and spent time at sea. He painted marine and coastal subjects and was involved in engineering and shipbuilding. He designed posters for several railway companies

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Redcar, BR poster, 1958

Poster produced for British Railways (BR) to promote rail travel to Redcar, North Yorkshire. The poster shows a view of the seaside with the promenade, beach and some boats on the sand. Artwork by Frank Sherwin

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Mandelbrot fractal

Mandelbrot fractal. Computer artwork of a part of the Mandelbrot Set, a pattern generated using a simple repeating mathematical process. The process of repetition (called iteration) is applied to a set of complex numbers. The patterns formed are infinitely complicated, appearing qualitatively the same on whatever scale they are viewed. A magnification, however large, of any part of the image, produces an image which looks very similar. Such repetition and fractional dimensionality is seen here. The study of such chaotic mathematical behaviour is used as a means of modelling real- world processes from stock market prices to population dynamics and fluid turbulence

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