Polarizing PVC--A Discrepant Event

Autor/inn/en	Headly, David; Karabatek, Mohamed
Titel	Polarizing PVC--A Discrepant Event
Quelle	In: Physics Teacher, 54 (2016) 1, S.6-7 (2 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-921X
DOI	10.1119/1.4937961
Schlagwörter	Science Experiments; Electromechanical Technology; Science Equipment; Scientific Principles; Scientific Methodology; Teaching Methods + Suchen Sie Ihr Suchwort? Elektrotechnik; Teaching method; Lehrmethode; Unterrichtsmethode
Abstract	This article describes an experiment teaching polarization phenomena and the Triboelectric Series in a unit on electrostatics. Using rods (2-3 ft in length) made from wood, aluminum, PVC, and Plexiglas on an inverted watch glass, these items demonstrated to the class how a party balloon rubbed with fake rabbit fur (charging the balloon negative) would always attract the uncharged rods, causing them to rotate towards the balloon. With the help of a student as part of his senior project, a further investigation of the source of the negative charge that exists on PVC was conducted. Questions to be answered were: was it nothing more than static charge that builds up on the pipe from unavoidable contact with its surroundings, or is it somehow intrinsic to the manufacturing process? The results showed that the PVC's charge is being acquired from its surroundings. A look at at the Triboelectric Series showed that PVC is near the bottom of the list, indicating that it prefers to acquire negative charge when rubbed with most other materials. (ERIC).
Anmerkungen	American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://scitation.aip.org/tpt
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01