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Description

ZoetropeThis reproduction of an early optical device employing the phenomenon of "Retinal Persistence" or Image Retention" is a fine piece for explaining how animated movies work. Sir Issac Newton experimented with this concept in the seventeenth century. In 1834 English mathematician George Horner proposed an apparatus that employed a cylindrical form, an open drum with slots at the top and an image strip placed at this bottom. This item is based on his

Diameter: 3

Stars and other features updated to make it functional

Legend has it that the Nocturnal Astrolabe was invented by Raimund Lill to administer doses of medicine to patients during the night

This vertical disk sundial from the end of the 16th century is an unusual piece: one side has an effigy of King Philip II of Spain and the other side is a sundial

Hand crafted of wood in painted green finish featuring a compass and brass plaque accent with cotton shadow line

This dial is a solar altitude clock

Crafted of brass with a wooden base this instrument comes complete with booklets on its use and historical context

made of bronze

1600 and ends December 31st

Planispheric (Catholic or European) astrolabe

explaining its use and historical context

which are on display at the Greenwich Maritime Museum

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