About This

• Purpose: Used to observe changes in lunar phases and explore the causes of lunar phase changes.
• The lunar phase change demonstration device consists of an Earth model, a Moon model, gears, mirrors, large and small dials, and a base.
• By simulating the light and dark sides produced by sunlight shining on the moon through the black and white side of the lunar model, rotating the small turntable counterclockwise will cause the lunar model to rotate around the Earth model. At the same time, under the drive of gears, the lunar model will rotate on its own, simulating the phases of the moon at different times.
• Looking inside from the top observation hole, you can see a flat mirror inside. By rotating the blue dial, the lunar model will also rotate accordingly
• By using the principle of mirror reflection, one can observe the phases of the moon on different dates.