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Thanks Idaho Digital Learning for supporting PhET through a generous donation. If you want to become a sponsor, go to CU Foundation PhET Project Fund. Or, e-mail kathryn.dessau@colorado.edu. Depending upon the level of sponsorship, your logo can appear on our website which has had over 15 million sims downloaded last year!
Are all atoms of a given element the same? How can you tell one isotope from another? Learn about isotopes, and about how to calculate the average atomic mass of an element.
Explore bending of light between two mediums with different indices of refraction. See how changing from air to water to glass changes the bending angle. Play with prisms of different shapes and make rainbows.
