Astronomy and Physics Simulations

These Java applets were written when I was working for the Physics and Astronomy Department at the University of British Columbia.

Some of these applets contain deprecated features (the Black Body applet, in particular). I'm slowly working to update these applets, but they may cause some older browsers to crash. To avoid any such trouble, I strongly advise people to use the latest Java plugin from Sun (JRE version 1.4 at least).

If you have any questions, feel free to contact me.

If you like these simulations, please help support Hypnagogic Software so that they can be improved and updated.

Click on the button below to make a donation, at whatever level you choose (in Canadian dollars):

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Solar system explorer

	Phases of the inner planets (interactive Java animation)
	Retrograde motion (interactive Java animation)
	Kepler's Laws (interactive Java animation)
	Cratering (Java applet)
	Solar Eclipses (interactive Java animation)

Simulations and Animations

Fusion in the Sun! 1 over R squared Extrasolar planets Search for Black Holes! NEW! HR diagram simulator Eclipsing binary stars Proper Motion Parallax Doppler effect Blackbody radiation

Telescopes and Observatories

Click on the image to run the applet of your choice.

Snell's Law Simple Lenses and Mirrors Electrostatics