The Shaking Torch: Another Variation on the Inductive Force

Autor/in	Thompson, Frank
Titel	The Shaking Torch: Another Variation on the Inductive Force
Quelle	In: Physics Education, 45 (2010) 6, S.575-576 (2 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0031-9120
DOI	10.1088/0031-9120/45/6/F01
Schlagwörter	Magnets; Energy; Light; Interaction; Laboratory Equipment; Science Experiments; Demonstrations (Educational); Scientific Principles; Motion + Suchen Sie Ihr Suchwort? Stabmagnet; Energie; Licht; Interaktion; Laborausstattung; Demonstrationsexperiment; Demonstrationsmodell; Demonstrationsunterricht; Bewegungsablauf
Abstract	A recent article showed how the influx of neodymium magnets has provided striking demonstrations of the interactions between magnets and conductors. The "shaking torch" is yet another example. Many of these torches require no batteries and can be submerged in water--indeed, a light for life. In this article, the author disassembles a shaking torch to know its component parts and find out how the torch actually worked. Dissecting a shaking torch has allowed an experiment to be carried out on the "generator" of this torch. Order-of-magnitude calculations show that several volts are expected from this generator. In summary the magnet is likely to be one of the powerful neodymium magnets used in toys and the like. One would be advised to be cautious about bringing it close to heart pacemakers, identity or loyalty cards or, indeed, credit cards or any other form of magnetic memory device. (Contains 6 figures.) (ERIC).
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	2017/4/10