Articles liés à Finding the Speed of Light
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Synopsis
More than two centuries before Einstein, using a crude telescope and a mechanical timepiece, Dutch astronomer Ole Romer measured the speed of light with astounding accuracy. How was he able to do this when most travelled? Like many paradigm-shattering discoveries, Romer's was accidental. Night after night he was timing the disappearance and reappearance of Jupiter's moon behind the huge, distant planet. Eventually he realized that the discrepancies in his measurements could have only one explanation: Light had a speed, and it took longer to reach Earth when Earth was farther from Jupiter. All he needed then to calculate light's speed was some fancy geometry.
Mark Weston' high—interest story and Rebecca Evans's colourful graphics make scientific discovery the coolest thing this side of Jupiter.
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