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Finding the Speed of Light

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Finding the Speed of Light Synopsis

More than two centuries before Einstein, using a crude telescope and a mechanical timepiece, Danish astronomer Ole Romer measured the speed of light with astounding accuracy. How was he able to do this when most scientists didn’t even believe that light traveled? Like many paradigm-shattering discoveries, Romer’s was accidental. Night after night he was timing the disappearance and reappearance of Jupiter’s moon Io 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.  

About This Edition

ISBN: 9780884485452
Publication date: 1st July 2019
Author: Mark Weston
Illustrator: Rebecca Evans
Publisher: Tilbury House,U.S.
Format: Hardback
Pagination: 32 pages
Series: The History Makers Series
Genres: Children’s / Teenage general interest: Biography and autobiography
Science
Educational: Mathematics and numeracy
Space