Ligth from the Moon

Research the Moon for a month in the twinkling of an eye!

Watch the YouTube Phases of the Moon video and
then watch the YouTube Moon Phase and Libration video.

Spot the difference between the two Moon-months?
Can you explain why they are both correct even though they are different?

If you are stuck for an answer, go to:
The children in this school explain the reason for the difference very well.

There are lots of things to measure about light from the Moon but it is difficult to do for real because it takes a month of cloudless nights! So we use a model to help us research. The light probe measures the reflected light from the ball in the same way that astronomers measure the light from the Moon.

To understand more about the phases of the Moon, Todd Timberlake has created a super demonstration of the Moon going round the Earth showing how the moon is illuminated by the Sun.

You can download this Phases of Moon demonstration directly from the Physics To Go website or by clicking here.

The Phases of Moon model was created using the Easy Java Simulations (Ejs) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Once downloaded, double clicking the ejs_MoonPhases.jar file will run the program if Java is installed.