View Full Version : OT: A goldmine of physics toys for free

01-27-2012, 02:10 PM
This website:


Has a huge collection of JAVA applets for all sorts of physic principles. They are very well done, they are free and they can be run online or, better yet, they can be downloaded. They even include the source code!

Here is an example of the fully 3-D Magnetostatic Fields Applet. This is a 2D view of the field lines surrounding a toroid electromagnet. In full 3D it can be viewed from any angle and sliced in X, Y and Z. Many configurations are selectable and all sorts of options are presented for viewing the fields in full 3D with motion. What a cool toy and there are 45 more.


You will need Sun Java installed which is a free download.

If you opt to download the applet you must unzip it. Then open the "index.html" file in your favourite browser and the applet will run ofline.

01-27-2012, 02:15 PM
Thanks Evan. Very cool!