Orrery Model

Orrery Model

A mechanical model of the first six planets and sun is presented. The planets orbit the sun at the frequencies.

PIRA Code(s): 
8A10.10
Set up time: 
none
Physics and Science Concepts: 
Planetary Astronomy, Solar System
Operation: 
Plug in the model. Flip the right switch to have the planets move and the left switch to turn the light bulb on which represents the earth.
Safety: 
Do not touch the light bulb, it may get hot.