electric field from 2 point charges
I love this use of the proposed "Summer of Code" graph and vector objects. It shows that Etoys will soon be ready for secondary education.
Could you add a flap or a pop-up to give some background? It would be nice if a user could find:
(1) a page ref to a text book or website with the solution
(2) a brief explanation of the structure of the program
Wonderful, can't wait to show my kids.
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