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[lauradi7dw]

I don't really need these for Physics (or as Chemistry reminders), but I'm thinking of buying at least the basic three (proton, neutron, electron). They wouldn't be great for juggling, at least by me, because (sensibly) the electron is much lighter than the others. Still, it's a little disappointing that the photon isn't massless (but it's very light, as it were).
http://www.particlezoo.net/index.html