A modern Fizeau experiment for education and outreach purposes
Olivier Morizot (PIIM), Adrien Sell\'e (PIIM), Sandrine Ferri (PIIM),, Didier Guyomarc'H (PIIM), Jean-Marie Laugier (PIIM), Martina Knoop (PIIM)
TL;DR
This paper describes a modern Fizeau experiment conducted for educational outreach, measuring the speed of light over a five-kilometer urban distance with high precision, highlighting both scientific and pedagogical aspects.
Contribution
It introduces a practical, real-world Fizeau experiment for educational purposes, demonstrating measurement of light speed in an urban environment with detailed discussion of challenges.
Findings
Measured the speed of light with 10^{-4} uncertainty
Demonstrated feasibility of urban Fizeau experiment for outreach
Discussed pedagogical and experimental challenges
Abstract
On the occasion of the laser's 50th anniversary, we performed a modern Fizeau experiment, measuring the speed of light with a laser beam passing over the city centre of Marseille. For a round trip distance of almost five kilometers, the measurement has reached an uncertainty of about 10, mainly due to atmospheric fluctuations. We present the experimental and pedagogical challenges of this brilliant outreach experiment.
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