Location: Cabinet C, Shelf 1
A clear sphere, marked with the constellations, and other astronomical features, makes a convenient aid.
Principles Illustrated: Terrestrial and Lunar Motion, Eclipse
Location: Cabinet B, Shelf 1
Charles Boyle,
4th Earl of Orrery, 1731
A lamp bulb illuminates a large yellow sphere (sun), so that the phases of the moon, as well as solar and lunar eclipses can be demonstrated as the chain linked earth and moon 'orbit' the sun.