Geometric Optics
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Simulación de trazos de rayos de un triplete de Cooke
Abstract In this paper, we developed the theoretical model Cooke triplet in an environment that runs programs quickly; which means you can build surfaces; increasing them and solving more complex and elaborated designs. This result is compared with the optical device developed with OSLO EDU [1] software. We show how a simple code is presented as a computatio
Rev. Bras. Ensino Fís.. Publicado em: 13/01/2020
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2. Uma abordagem histórica da reflexão e da refração da luz
Abstract Este trabalho apresenta uma proposta de ensino dos fenômenos da reflexão e da refração da luz a partir de uma abordagem histórica da ciência. Essa abordagem histórica é fundamentada em cinco pilares: estudos em história da óptica, a experimentação investigativa, os três momentos pedagógicos, a leitura contextualizada de fontes primári
Rev. Bras. Ensino Fís.. Publicado em: 09/09/2019
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3. Generation of Non-diffraction Vortex Beam and Its Application in Digital Communication
Abstract An axicon-frustum basin-type Bessel resonator is designed for generating non-diffraction vortex beams with opposite propagation directions under different conditions. Based on the theory of geometric optics, the principle of creating vortex beams is analyzed in this axicon-frustum basin-shaped resonant cavity. It is shown that a non-diffraction vort
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 19/06/2019
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4. A didactic reformulation of the laws of refraction of light
In this work, an alternative formulation of the laws of refraction of light is presented. The proposed formulation unifies the two established laws of refraction, and it is shown the correspondence between the new and the classic formulations. This new formulation presents a remarkable didactic interest for the conceptual interpretation and resolution of typ
Rev. Bras. Ensino Fís.. Publicado em: 01/02/2018
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5. AN ARCHITECTURE FOR PHOTOREALISTIC IMAGE SYNTHESIS BASED ON MONTE CARLO TECHNIQUES / UMA ARQUITETURA PARA SÍNTESE DE IMAGENS FOTORREALISTAS BASEADA EM TÉCNICAS DE MONTE CARLO
One of the main goals in computer graphics is to create photorealistic images, that is, images indistinguishable from the ones captured by a real camera, or, more ambitiously, images that cause the same sensation on the visual system of an observer looking directly at a scene. Applications include illumination design, architecture, virtual reality and the mo
Publicado em: 2006
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6. Variedades de contato e fÃsica-matemÃtica
Este trabalho divide-se em duas partes distintas, ambas dedicadas à Geometria Diferencial. Na primeira parte, introduzimos um novo invariante geomÃtrico, criado por R.R.Montes e J.A.Verderesi1, para estudar superfÃcies imersas em esferas de dimensÃo Ãmpar. Nos detemos exclusivamente à esfera tridimencional, apresentando uma caracterizaÃÃo do Toro de
Publicado em: 2006
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7. SIMULATION AND DEVELOPMENT OF A FREE-SPACE OPTICS IN RIO DE JANEIRO AND RELATIONSHIP WITH ITU-T G.826 / SIMULAÇÃO E DESENVOLVIMENTO DE UM ENLACE DE FREE-SPACE OPTICS NO RIO DE JANEIRO E A RELAÇÃO COM A ITU-T G.826
Very few works had been developed in Brazil, dealing with Free-Space Optics (FSO). In this arrangement, a laser beam carries information for a short range (up to 3-4 km), avoiding the use of optical fiber. FSO is a rapidly-improved solution and very economical, specifically in urban areas. In this work a FSO system operating in Rio is described. This work pr
Publicado em: 2005
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8. O conceito de semelhança: uma proposta de ensino
The aim of this research was to analyse the difficulties dealt with by first form students attending the Brazilian high school system, as well as to check to what extent a teaching sequence using the concept of homothetic integrated with Geometric Optics can favour the learning of the concept of similarity. Our preliminary studies lead us to observe that tea
Publicado em: 2004
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9. O conceito de semelhança: uma proposta de ensino
The aim of this research was to analyse the difficulties dealt with by first form students attending the Brazilian high school system, as well as to check to what extent a teaching sequence using the concept of homothetic integrated with Geometric Optics can favour the learning of the concept of similarity. Our preliminary studies lead us to observe that tea
Publicado em: 2004
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10. Criteria for regular spacing of reacting Mach stems
Nonlinear geometric optics is developed to construct translating self-similar high-frequency nonlinear wave patterns as perturbed solutions behind reacting shock waves. The geometric conditions involving these wave patterns that yield the maximum acoustic amplification lead to criteria for both the formation and regular spacing dimension for Mach stems in re