Free fall in vacuum

dc.contributor.author	Σιανούδης, Ιωάννης Α.	el
dc.contributor.author	Πετράκη, Μ.	el
dc.contributor.author	Σερρής, Μ.	el
dc.contributor.author	Πρελορέντζος, Λουδοβίκος Α.	el
dc.date.accessioned	2015-01-27T20:15:30Z
dc.date.available	2015-01-27T20:15:30Z
dc.date.issued	2015-01-27
dc.identifier.uri	http://hdl.handle.net/11400/4877
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://e-jst.teiath.gr/	en
dc.subject	Air resistance
dc.subject	Αντίσταση στον αέρα
dc.subject	Fall experiments
dc.subject	Πειράματα πτώσης
dc.subject	Air pressure
dc.subject	Ατμοσφαιρική πίεση
dc.title	Free fall in vacuum	en
heal.type	journalArticle
heal.secondaryTitle	an educational Lab-experiment	en
heal.classification	Science
heal.classification	Physics
heal.classification	Επιστήμες
heal.classification	Φυσική
heal.classificationURI	http://zbw.eu/stw/descriptor/15685-2
heal.classificationURI	http://zbw.eu/stw/descriptor/15669-0
heal.classificationURI	N/A-Επιστήμες
heal.classificationURI	N/A-Φυσική
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85002696
heal.language	en
heal.access	free
heal.publicationDate	2009
heal.bibliographicCitation	Sianoudis, I.A., Petraki, M., Serris, M. and Prelorentzos, L.A. (2009). Free fall in vacuum: an educational Lab-experiment. "e-Journal of Science & Technology". [Online] 4(1): 37-44. Available from: http://e-jst.teiath.gr/	en
heal.abstract	Free fall experiments, based on various methods and technologies, can be found in every educational Physics laboratory. The proposed apparatus allows the study of the effect of air resistance in the movement of the falling body. The apparatus is relatively simple and easy to construct, and consists of a tube in which a ping pong ball is dropped. Various conditions of air pressure in the tube, measured with a sensor, can be realized through the use of an air-pump. The motion of the ball is monitored via a series of LED-photo resistor gates which are placed along the tube, and which take measurements of the position of the ball at various points of its path. As the ball falls, it passes through successive photo resistor gates, the signals of which can be collected and analyzed with a common computer program. Taking and analyzing data with the proposed apparatus may be considered as an interesting and useful educational activity for first semester students. In this paper, we present a description of the apparatus, together with some experimental results exhibiting the role of air resistance in the motion of the ball. The experimental data presented were obtained during a typical student laboratory session.	en
heal.publisher	Νερατζής, Ηλίας	el
heal.publisher	Σιανούδης, Ιωάννης	el
heal.journalName	e-Journal of Science & Technology	en
heal.journalName	e-Περιοδικό Επιστήμης & Τεχνολογίας	el
heal.journalType	peer-reviewed
heal.fullTextAvailability	true