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Sign: London - Greenwich - The Greenwich Meridian Telescope


Address:
Royal Observatory, Blackheath Ave, London SE10 8XJ, UK
Category:
Monuments and History
City:
London For all manhole covers in London
Country:
United Kingdom For all manhole covers in United Kingdom
Shape:
Rectangle
Material:
Metal
Placement:
Wall or fence
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On the sign:
The Greenwich Meridian Telescope
Behind the window is the telescope which defines the Greenwich Meridian. It is a transit circle designed by the 7th Astronomer Royal, George Airy, in 1850. It was the centre-line of this instrument that was adopted by an international conference in Washington, USA, in 1884 as the Prime Meridian for the World, or longitude 00° 00’ 00". Both time and longitude are measured from this line.
Photography:
2023
Eli Zvuluny
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Comments:
The telescope was photographed on the same day (the longitude can be seen on top of the window, both in the photo taken from the inside and the one outside) Click for a larger image Click for a larger image

Longitude 0 (Greenwich Line) is indicated on the next sign Click for sign's details


The signs closest to the current sign (Click to show or hide) Mesh (mosaic) Signs around me

London - Greenwich - Prime meridian
Royal Observatory, Blackheath Ave, London SE10 8XJ, UK (5 Meter)
London - Greenwich - William Herschel’s telescope
Royal Obervatory, Blackheath Ave, London SE10 8XJ, UK (14 Meter)
London - Greenwich - Gate clock mechanism
Royal Observatory, Blackheath Ave, London SE10 8XJ, UK (14 Meter)
London - Greenwich - The Shepherd 24-hour Gate Clock and The Time Ball
Royal Observatory, Blackheath Ave, London SE10 8XJ, UK (15 Meter)
London - Greenwich - standards of length and height
Royal Observatory, Blackheath Ave, London SE10 8XJ, UK (15 Meter)
London - Greenwich - Flamsteed’s well telescope
Royal Obervatory, Blackheath Ave, London SE10 8XJ, UK (16 Meter)

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