The indefatigable Mary Mulvihill has produced a podcast guide to a Royal Canal walk, from Dunsink to Broombridge. The podcast is free to download as an MP3 file.
Its production was supported by Maths Week Ireland and the Irish Research Council for Science, Engineering & Technology (IRCSET); it follows the annual walk to commemorate the achievement of Sir William Rowan Hamilton, who in 1843 invented a new type of algebra, quaternions, and wrote the equation on the bridge.
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Irish waterways history 