A Contribution for the Construction of Parabolic Mirrors

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dc.creatorde Paula, L. A. N.
dc.creatorRaggio, P.
dc.creatorAssis, A. K. T.
dc.date2008-10-22
dc.date.accessioned2026-07-07T12:15:53Z
dc.date.available2026-07-07T12:15:53Z
dc.descriptionWe present a new procedure for the construction of parabolic mirrors using low cost materials. We build a spinning system composed of nylon threads, fish hooks and a plastic bucket. We pour liquid plaster into the bucket and set it in constant rotational motion relative to the earth. A liquid substance assumes a parabolic profile when spinning at constant angular velocity relative to an inertial frame under the influence of an uniform vertical gravitational field. By keeping the bucket under rotation for a long time, the plaster solidifies into a parabolic format. We utilize this solidified plaster paraboloid as a model to construct a counter-mould of glass fibre and resin. Over this counter-mould it is placed stretched laminated foil and then it is poured thick plaster over it. In this way it is obtained a parabolic mirror made of laminated foil and plaster. Our only objective here is to present a new method for the construction of parabolic mirror using low cost materials. This allows further exploration of this procedure by teachers and students either in high-schools or in universities.
dc.description10 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/0810.4165
dc.identifierhttp://arxiv.org/abs/0810.4165
dc.identifierCad.Bras.Ens.Fis.24:338-352,2007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211631
dc.subjectPopular Physics
dc.subjectInstrumentation and Detectors
dc.titleA Contribution for the Construction of Parabolic Mirrors
dc.typetext

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