Artigos Científicos - FACFIS/ICEN

URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/3216

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Agora exibindo 1 - 7 de 7

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Cálculo de velocidades em acidentes de trânsito: um software para investigação em física forense
(Universidade Federal do Pará, 2015-12) GURGEL, Walldiney Pedra; GOMES, Luiz Moreira; FERREIRA, Fernanda Carla Lima; GESTER, Rodrigo do Monte
In this paper we present and evaluate the Speed Calculations software for Traffic Accidents (SCTA). This application is designed for forensic studies and follows a protocol that allows the expert in crime scene analysis, even one that has no knowledge of physics, to estimate vehicle speeds involved in collisions and pedestrian accidents. SCTA uses basic concepts of classical mechanics, employs different coefficients of friction and takes into account the damage and the characteristics of the vehicles involved. This allows to determine the speeds in various accident situations. The software follows an open source philosophy, allowing implementation of new accident scenarios. Finally, as input data, SCTA needs only a few measurements performed by an expert. This avoids unnecessary scene observation and, optimizes and ensures reliability of forensic expertise.
Acesso aberto (Open Access)
Divulgação científica na Amazônia: o laboratório de demonstrações da UFPA
(Universidade Federal do Pará, 2017-01) CALDAS, Jocasta; CRISPINO, Luís Carlos Bassalo
Science communication has a key role in democratizing the access to knowledge. In the last decades, many scientific diffusion initiatives emerged and developed in a process of expansion of institutions and investments. In the Brazilian Amazonia, the number of science communication actions is far less than what would be necessary to satisfactorily contemplate its vast territorial extension. The Demonstrations Laboratory of the Federal University of Pará, founded in 2004, has acted as a science center aiming the advancement of scientific literacy in the Brazilian Amazonia, as well as the dissemination and popularization of science and technology. We present the activities of this Demonstrations Laboratory over more than a decade of operation and the impact of its educational and science communication actions carried out in the Brazilian Amazonia.
Acesso aberto (Open Access)
O estudo do movimento browniano com material de baixo custo
(Universidade Federal do Pará, 2017-07) PEREZ, Silvana; MAIA, Noel das Chagas; NASCIMENTO, Cristovão Silva; CASTRO, Bárbara Fernandes do Nascimento
The study of Brownian motion is seen in modern physics disciplines of undergraduate courses in physics, following a theoretical or laboratory approach, in this case usually involving reasonably sophisticated equipment. This work describes a proposal for the implementation of the experiment in high school, designed and developed by students of the last semester of the night course of licentiate in Physics of the Federal University of Para, as part of the activities of a discipline of Statistical Physics. The ease of assembly of the experiment, combined with the use of computational technologies to analyze the results, makes the technique easily implemented in high school, enabling the student to discuss historical aspects of the development of atomic models, as well as to perform the experimental measurement of the number of Avogrado, usually seen in Chemistry, in a mechanized way.
Acesso aberto (Open Access)
Expedição norte-americana e iconografia inédita de Sobral em 1919
(Universidade Federal do Pará, 2017-06) CRISPINO, Luís Carlos Bassalo; LIMA, Marcelo Costa de
We report on the observations in Brazil related to the total solar eclipse of May 29th, 1919, giving emphasis to the less known expedition organized by the Carnegie Institution, leaded in Brazil by the American Daniel Maynard Wise. We exhibit a selection of unpublished photographies obtained by Wise during his stay in Brazil.
Acesso aberto (Open Access)
Explorando história da ciência na Amazônia: o Museu Interativo da Física
(Universidade Federal do Pará, 2016-08) CALDAS, Jocasta; LIMA, Marcelo Costa de; CRISPINO, Luís Carlos Bassalo
In 2008, professors and students of the Physics Department of the Federal University of Pará realized a pioneering initiative for the dissemination of the History of Science in the Brazilian Amazonia. This initiative, named Physics Interactive Museum, started to act in partnership with the Amazonian community, its governmental organizations, other universities, state and municipal schools of the Pará State aiming to collaborate with the enhancement of the quality of science education in the region. We present the activities of the Physics Interactive Museum and the impact of its participation in the dissemination of History of Science in the Brazilian Amazonia.
Acesso aberto (Open Access)
Medindo a velocidade do som utilizando figuras de Lissajous
(Universidade Federal do Pará, 2015-09) MAGNO, Fátima Nazaré Baraúna; SOUZA, João Furtado de; PEREZ, Silvana
There are several techniques to obtain the sound velocity in air, from the very simple ones, which use the relation between distances and time, until the more sophisticated ones, associated with oscillatory phenomena. In this work we propose an experimental aparathus which involves the Lissajous figures and ressonance tubes. The physical phenomena that appear in the process allow the student to observe and understand several ondulatory processes, as well as the superposition principle and can be applied to engenier and physics undergraduate students.
Acesso aberto (Open Access)
Sobre a representação mecânica das forças elétrica, magnética e galvânica, de William Thomson: uma leitura comentada
(Universidade Federal do Pará, 2017-03) LIMA, Marcelo Costa de; COSTA, R. S.
We present and comment the homonimous article originally published by William Thomson, in 1847, in which the author explores the analogy between the estates of deformation in an elastic solid and the configurations of Faraday's lines of force. In this article Thomson has introduced for the first time the magnetic potential vector, associated in this context with rotational deformations in the solid. We present as well, the historical context in which Thomson's original paper has been conceived.

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Navegando Artigos Científicos - FACFIS/ICEN por Orientadores "Revista Brasileira de Ensino de Física"