"C" at the Belfry

Autor/inn/en	Semay, Claude; Lo Bue, Francesco; Mélin, Soizic; Michel, Francis
Titel	"C" at the Belfry
Quelle	In: Physics Education, 53 (2018) 3, Artikel 035015 (6 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Semay, Claude)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-9120
DOI	10.1088/1361-6552/aaab86
Schlagwörter	Physics; Measurement; Scientific Principles; Light; Science Experiments; Laboratory Experiments; Science Laboratories; Exhibits; Optics; Laboratory Equipment; Secondary School Science; High School Students; Foreign Countries; Belgium + Suchen Sie Ihr Suchwort? Physik; Messverfahren; Licht; Laboratory work; Laborarbeit; Optik; Laborausstattung; High school; High schools; Student; Students; Oberschule; Schüler; Schülerin; Studentin; Ausland; Belgien
Abstract	In 1849, Hippolyte Fizeau determined the speed of light in a famous experiment. The idea was to measure the time taken for a pulse of light to travel between an intense light source and a mirror about 8 km away. A rotating cogwheel with 720 notches, that could be rotated at a variable speed, was used to chop the light beam and determine the flight time. In 2017, physicists and technicians of the University of Mons in Belgium reproduced the experiment with modern devices to allow members of the public to measure the speed of light themselves. The light source used was a low power laser, and the cogwheel was replaced by an electrically driven chopper, but the general spirit of Fizeau's experiment was preserved. The exhibition was organised in the belfry of Mons, a baroque-style building classified as a UNESCO World Heritage site. The solutions found for the main problems encountered are presented here to help colleagues intending to reproduce the experiment. (As Provided).
Anmerkungen	Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: info@ioppubusa.com; Web site: http://journals.iop.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01