Description
Sun, Earth and Moon manually revolve around one another on this gear-driven model. Effectively demonstrates daylight, night, seasons, and phases of Moon. Arm is 375mm, Sun is 150mm in diameter. Includes study guide.
Sun, Earth and Moon manually revolve around one another on this gear-driven model. Effectively demonstrates daylight, night, seasons, and phases of Moon. Arm is 375mm, Sun is 150mm in diameter. Includes study guide.