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Top-level
 7/ In 1884 an international convention met in Washington DC πΊπΈ, and the Greenwich meridian, passing through the Greenwich Observatory, was agreed to be the 0 line of longitude, the so-called "Prime Meridian" https://en.wikipedia.org/wiki/Prime_meridian The line was also used as the basis for timezone definition, hence the term "Greenwich Mean Time" 8 comments
8/ In 1931 cartography changed forever when technical draughtsman Harry Beck represented the London Underground network as a schematic diagram rather than a geographically correct map. https://en.wikipedia.org/wiki/Harry_Beck Beck's iconic style has been copied by transport networks - and others - world wide, with many, many variants. Over the years we have had many talks at Geomob London about the Tube network, material enough for a thread of its own in the future. 11/ London is sometimes still referred to as "The Big Smoke", a reference to the terrible pollution of the past, but these days the city is quite green 50% of London is covered in green space, and an incredible 8 million trees are dotted across the capital. In 2019, it was officially declared a National Park City. 16/ Ahh wait if you want to learn more about Geomob London (or other cities) please follow @geomob The next London event will be on July 3rd as part of London Data Week. Here's the summary thread of this week's event: |
Gregory's Server
8/ Not much later Charles Booth meticulously surveyed the demographics of London to create his famous "Life and Labour of the People in London", the first example of a "poverty map" showing the spatial distribution of poverty and inequality in the city.
https://en.wikipedia.org/wiki/Life_and_Labour_of_the_People_in_London