Hollow Globe sold at the Outlook Tower and intended for the teaching of geography.
The brilliant principle of this concave globe was to make cartographic and perspective projection coincide. The geometric construction of the globe was stereographic, i.e. the projection was centred on the surface of the globe. The point chosen was Edinburgh, coinciding exactly with the location where the map was to be seen, so the Episcope presented visitors with what they would have seen if their vision had been capable of stretching across the surface of the earth to countries and continents hidden beyond the horizon. In short, it was a kind of panoramic mappa mundi.http://patrickgeddes.co.uk/feature_eleven.html
Episcope also known as a magic lantern or overhead projector used in schools = device which displays opaque materials by shining a bright lamp onto the object from above.
Magic Lantern Projector - Rare By Kershaw - Science/Demonstration.
an attraction situated in London'sLeicester Square between 1851 and 1862, constructed byJames Wyld (1812–1887), a distinguished mapmaker and former Member of Parliament for Bodmin.
At the centre of a purpose-built hall was a giant globe, 60 feet 4 inches (18.39 m) in diameter. The globe was hollow and contained a staircase and elevated platforms which members of the public could climb in order to view the surface of the earth on its interior surface, which was modelled in plaster of Paris, complete with mountain ranges and rivers all to scale.Punch described the attraction as "a geographical globule which the mind can take in at one swallow." In the surrounding galleries were displays of Wyld's maps, globes and surveying equipment.
Plans for the great globe, 1851
including exterior galleries
Wyld's guide book to the globe
The Mapparium, a 20th-century take on the concave globe
In Christian Science Plaza, Boston
The Gottorp Globe first modern Planiterium, 1664
Centerpiece of New York World's fair, giant ball housing a model of a utopia garden. 1939
“symbol of a perfectly integrated, futuristic metropolis pulsating with life and rhythm and music.”
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