• Snell-Descartes Law

    The Snell-Descartes law relates the angles formed between the rays of light and the normal line with the refractive indices…

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  • Parallel faced blade

    The blade is the association of two parallel plane diopters: air/glass and glass/air The Parallel Faced BladeĀ is a system of…

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  • Brewster’s Law

    Brewster’s law demonstrates the formation of the so-called Brewster angle which, added to the refraction angle, must result in a…

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  • light-matter interaction

    The notebook cover is considered a translucent medium, as we cannot clearly see the image contained in the notebook. When…

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  • optical instruments

    Optical instruments are based on optical principles and are intended to facilitate the visualization of certain objects. A microscope is…

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  • Refractive index

    The refractive index is a dimensionless quantity that measures the ratio between the speeds of light in different media. The…

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  • Optical illusion

    Optical illusions are images that deceive the human vision, causing the human being to see things that are not present…

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  • hypermetropia

    Vision of a person who has the visual defect of hyperopia We can say that our eye, or eyeball as…

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  • Solar and lunar halo

    The solar and lunar halos are luminous circles formed around the Sun and Moon, respectively, as a result of reflections…

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  • Front and Light Brush

    In the study of Geometric Optics, the concept of light says that it is a physical entity capable of sensitizing…

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