Description

Orrery

Orrery:

This is a mechanical model of the solar system that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; but since accurate scaling is often not practical due to the actual large ratio differences, a subdued approximation may be used instead.

Specifications:

• Internally gear-driven motor revolves planets around the sun in their relative orbits.
• Users can manually adjust planets according to the planet position table with the 360 ° scale on the base.
• Model is exceptionally quiet and includes a lesson plan to help explain orbit and speed.
• Also available in a 220 volt version.

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