Now "Weight" A Minute!

(Weights & Measures)

To increase the volume of any video on this page, click on the play button, then move your curser over the speaker icon on the bottom left.  This will display a sliding bar that you can click on and hold while you slide it to the right to increase your volume.  (Or you might just need to turn up your speakers!... )

Gravity & Gravity Wells

Basic Gravity Demonstration

Gravity Well Simulations

Using a Gravity Well

Gravity Visualized

Make a Gravity Well