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NOVA E = mc2 Tim Halpin-Healy artwork
Religion & Spirituality

NOVA E = mc2 Tim Halpin-Healy

NOVA E = mc2 | PBS by WGBH Science Unit

Sep 16, 20052:33Religion & Spirituality

Tim Halpin-Healy, Theoretical Physicist, Barnard College, Columbia University: "Moving clocks run slow, moving meter sticks are shortened -- how does that happen?"