Royal Borough of Greenwich in Greater London County, England, United Kingdom
The Greenwich Meridian Telescope
Behind the window is the telescope which defines the Greenwich Meridian, the transit circle of 1850 designed by 7th Astronomer Royal, George Airy. It was the centre-line of this instrument which was adopted by an international conference in Washington, USA, in 1884 as the prirne meridian for the world, or Longitude 00° 00' 00". Both time and longitude are measured from this line.
Topics. This historical marker is listed in this topic list: Science & Medicine.
Location. 51° 28.672′ N, 0° 0.089′ W. Marker is in Royal Borough of Greenwich, England, in Greater London County. Marker can be reached from the intersection of Blackheath Avenue and Great Cross Avenue, on the left when traveling north. Located at the Royal Observatory Greenwich. Touch for map. Marker is in this post office area: Royal Borough of Greenwich, England SE10 8XJ, United Kingdom. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Airy’s meridian line (here, next to this marker); Time for everyone (here, next to this marker); Bradley’s meridian line (here, next to this marker); William Herschel’s Telescope The Shepherd 24-hour Gate Clock (a few steps from this marker); Ordnance Survey Bench Mark (a few steps from this marker); Flamsteed’s Well Telescope (a few steps from this marker); Greenwich Meridian Marker, 1750-1851 (a few steps from this marker). Touch for a list and map of all markers in Royal Borough of Greenwich.
Also see . . . Royal Observatory, Greenwich on Wikipedia. (Submitted on May 25, 2018, by Michael Herrick of Southbury, Connecticut.)
Credits. This page was last revised on May 25, 2018. It was originally submitted on May 25, 2018, by Michael Herrick of Southbury, Connecticut. This page has been viewed 64 times since then and 7 times this year. Photos: 1, 2, 3. submitted on May 25, 2018, by Michael Herrick of Southbury, Connecticut.