Artigos Científicos - FACFIS/ICEN
URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/3216
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Navegando Artigos Científicos - FACFIS/ICEN por Autor "CRISPINO, Luís Carlos Bassalo"
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Item 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 BassaloScience 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.Item Acesso aberto (Open Access) Electric charge rotating around a black hole(2005-12) CASTIÑEIRAS RODRÍGUEZ, Jorge; CRISPINO, Luís Carlos Bassalo; FIGUEIRA, Rodrigo Murta de Andrade; MATSAS, George Emanuel AvraamWe consider an electric charge rotating around a Schwarzschild black hole. We compute, using quantum field theory in curved spacetime at the tree level, the power emitted by the rotating charge minimally coupled to the Maxwell field. We also compute how much of the radiation emitted by the swirling charge is absorbed by the black hole.Item 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 deWe 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 We exhibit a selection of unpublished photographies obtained by Wise during his stay in Brazil.Item Acesso aberto (Open Access) Explorando história da ciência na Amazônia: o Museu Interativo da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 BassaloIn 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.Item Acesso aberto (Open Access) Scalar source in circular motion interacting with massive klein-gordon field in Minkowski spacetime(2005-12) CRISPINO, Luís Carlos Bassalo; MEIRA FILHO, Damião PedroWe analyze the scalar radiation emitted by a source in uniform circular motion in Minkowski spacetime interacting with a massive Klein-Gordon field. We assume the source rotating around a central object due to a Newtonian force. By considering the canonical quantization of this field, we use perturbation theory to compute the radiation emitted at the tree level. Regarding the initial state of the field as being the Minkowski vacuum, we compute the emission amplitude for the rotating source, assuming it as being minimally coupled to the massive Klein-Gordon field. We then compute the power emitted by the swirling source as a function of its angular velocity, as measured by asymptotic static observers.Item Acesso aberto (Open Access) Sir William Thomsom e a instalação do cabo telegráfico submarino entre Pernambuco e o Pará(2007) BASSALO, José Maria Filardo; CRISPINO, Luís Carlos BassaloIn this paper we report the participation of Sir William Thomson in the installation of the submarine telegraph cable between Pernambuco and Pará by the Western and Brazilian Telegraph Company in August and September of 1873.