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A dispersive prism is an optical device that uses refraction to split white light into its spectral components (the colors of the rainbow). Learn about the principle, types, history and applications of dispersive prisms, and how they differ from diffraction gratings and mirrors.
Optical glass is a type of glass suitable for optical systems such as lenses, prisms or mirrors. It contains additives to modify its optical or mechanical properties, such as refractive index, dispersion, transmittance and thermal expansion.
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.
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.
Learn about the different types of corrective lenses, such as glasses, contact lenses, and intraocular lenses, and how they are prescribed by eye care professionals. Find out how they improve visual perception and treat refractive errors, and the advantages and disadvantages of over-the-counter and self-selected lenses.
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.
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).
Chromatic aberration, also called color fringing, is a failure of a lens to focus all colors to the same point. Learn about the types, causes, and minimization methods of this optical phenomenon, and see examples and applications.
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