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Prism (optics) A familiar dispersive prism. An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base ...
Optical glass refers to a quality of glass suitable for the manufacture of optical systems such as optical lenses, prisms or mirrors.Unlike window glass or crystal, whose formula is adapted to the desired aesthetic effect, optical glass contains additives designed to modify certain optical or mechanical properties of the glass: refractive index, dispersion, transmittance, thermal expansion and ...
The relationship between women and video games has received extensive academic and media attention. Since the 1990s, [ 1 ] female gamers have commonly been regarded as a minority. However, industry surveys have shown that over time, the gender ratio has become closer to equal. Beginning mainly in the 2010s, women have been found to make up ...
Micropsia is a condition affecting human visual perception in which objects are perceived to be smaller than they actually are. Micropsia can be caused by optical factors (such as wearing glasses), by distortion of images in the eye (such as optically, via swelling of the cornea or from changes in the shape of the retina such as from retinal edema, macular degeneration, or central serous ...
A home video game console is a predesigned piece of electronic hardware that is meant to be placed at a fixed location at one's home, connected to a display like a television screen or computer monitor, and to an external power source, to play video games on using one or more video game controllers. This differs from a handheld game console ...
VTech Socrates. The VTech CreatiVision is a hybrid computer and home video game console introduced by VTech in 1981 and released in 1982 during the second generation of video game consoles. It cost $295 Australian Dollars in Australia. [1] The hybrid unit was similar in concept to computers such as the APF Imagination Machine, [2] the older ...
Glasses, also known as eyeglasses and spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears.
Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
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