PhET Blog

Have you tried Plate Tectonics or Molecule Shapes, but couldn’t get these sims to run on your computer?

Well, try again! We’ve upgraded both to work on as many platforms as possible. Please note that the simulations use LWJGL for the 3D graphics. Unfortunately, at this time LWJGL does not support Java 7 on Mac OSX. For to run these simulations, it is necessary to downgrade your Java to version 6. To learn how to do this, see

http://support.apple.com/kb/HT5559?viewlocale=en_US&locale=en_US

If you’re still having troubles, please let us know so we can ensure that it works for everyone.

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