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Learn about the different types of optical prisms, such as dispersive, reflective, beam-splitting and polarizing prisms, and how they refract, reflect or split light. Find out how prisms are made of transparent materials like glass, acrylic or fluorite, and how they can create spectra, images or polarizations.
Prisms are sometimes used for the internal reflection at the surfaces rather than for dispersion. If light inside the prism hits one of the surfaces at a sufficiently steep angle, total internal reflection occurs and all of the light is reflected. This makes a prism a useful substitute for a mirror in some situations.
Learn about the history, construction, and classification of lenses, which are optical devices that focus or disperse light by refraction. Find out the differences between simple lenses (such as spherical, toric, or biconvex) and compound lenses (such as achromatic, microscope, or telescope).
Dispersion is the phenomenon of wave velocity depending on frequency, causing different colors to refract at different angles. Anomalous dispersion occurs when the refractive index increases with wavelength, such as in the ultraviolet region, while normal dispersion occurs when it decreases with wavelength, such as in visible light.
Learn about the origins and development of optics from ancient times to modern days. Explore the contributions of Greek, Roman, Islamic, and European scholars to the fields of geometrical, physical, and physiological optics.
A polarizer is an optical filter that lets light waves of a specific polarization pass through while blocking light waves of other polarizations. Learn about linear polarizers, circular polarizers, absorptive polarizers, beam-splitting polarizers and polarization by Fresnel reflection.
Yoked prism can move the image away from primary gaze without the need for a constant head tilt or turn. [1] Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base". The base is the thickest part of the lens and is opposite from the apex.
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Learn about the history of optics from ancient times to modern quantum optics, the different models of light such as geometric, physical and quantum optics, and the practical applications of optics in various ...
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