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  2. Hirschberg test - Wikipedia

    en.wikipedia.org/wiki/Hirschberg_test

    The Krimsky test is essentially the Hirschberg test, but with prisms employed to quantitate deviation of ocular misalignment by determining how much prism is required to centre the reflex [2] The Krimsky test is advisably used for patients with tropias, but not with phorias.

  3. Dove prism - Wikipedia

    en.wikipedia.org/wiki/Dove_prism

    A Dove prism is a type of reflective prism which is used to invert an image. Dove prisms are shaped from a truncated right-angle prism. The Dove prism is named for its inventor, Heinrich Wilhelm Dove. Although the shape of this prism is similar to the shape described by a Dovetail joint, the etymology of the two is unrelated.

  4. Dichroic prism - Wikipedia

    en.wikipedia.org/wiki/Dichroic_prism

    A trichroic prism assembly Dichroic prism. A dichroic prism is a prism that splits light into two beams of differing wavelengths (colour). [1] A trichroic prism assembly combines two dichroic prisms to split an image into 3 colours, typically as red, green and blue of the RGB colour model.

  5. Hexagonal prism - Wikipedia

    en.wikipedia.org/wiki/Hexagonal_prism

    3D model of a uniform hexagonal prism. In geometry, the hexagonal prism is a prism with hexagonal base. Prisms are polyhedrons; this polyhedron has 8 faces, 18 edges, and 12 vertices.

  6. Geo Prizm - Wikipedia

    en.wikipedia.org/wiki/Geo_Prizm

    The Prizm was introduced in February 1989 for GM's then-new Geo brand of import cars, for the 1990 model year. [1] The hatchback version sold through 1991 was a rebadged version of the Toyota Sprinter Cielo, although unlike the Sprinter (and Corolla liftback) it received the same front clip as the sedan.

  7. H-IIA - Wikipedia

    en.wikipedia.org/wiki/H-IIA

    H-IIA (H-2A) is an active expendable launch system operated by Mitsubishi Heavy Industries (MHI) for the Japan Aerospace Exploration Agency. These liquid fuel rockets have been used to launch satellites into geostationary orbit ; lunar orbiting spacecraft; Akatsuki , which studied the planet Venus; and the Emirates Mars Mission , which was ...

  8. Grism - Wikipedia

    en.wikipedia.org/wiki/Grism

    A grism (also called a grating prism) is a combination of a prism and grating arranged so that light at a chosen central wavelength passes straight through. The advantage of this arrangement is that one and the same camera can be used both for imaging (without the grism) and spectroscopy (with the grism) without having to be moved.

  9. Enamel prism - Wikipedia

    en.wikipedia.org/wiki/Enamel_prism

    An enamel prism, or enamel rod, is the basic unit of tooth enamel. Measuring 3-6 μm in diameter in primates, [ 1 ] enamel prism are tightly packed hydroxyapatite crystals structures. The hydroxyapatite crystals are hexagonal in shape, providing rigidity to the prism and strengthening the enamel.