Saturday, 26 November 2011

Hollow Globe (Episcope) sold at outlook tower

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.

Patrick Geddes

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.

modern day overhead projector

see also...

Wyld's Great Globe(giant hollow globe)

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."[1] 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

Recluses Globe

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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