Yhteydenotto
PhET-projekti:
c/o Oliver Nix
University of Colorado 390 UCB
Boulder, CO 80309-0390
Käyttöoikeustiedot:
We have licensing information for the interactive simulations and their source code.
Sähköposti:
Please address all electronic correspondence to: phethelp@colorado.edu, or see information on donating to PhET.