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  2. Dispersive prism - Wikipedia

    en.wikipedia.org/wiki/Dispersive_prism

    A ray trace through a prism with apex angle α. Regions 0, 1, and 2 have indices of refraction, , and , and primed angles ′ indicate the ray's angle after refraction.. Ray angle deviation and dispersion through a prism can be determined by tracing a sample ray through the element and using Snell's law at each interface.

  3. Prism (optics) - Wikipedia

    en.wikipedia.org/wiki/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 and rectangular ...

  4. Glan–Thompson prism - Wikipedia

    en.wikipedia.org/wiki/Glan–Thompson_prism

    The two halves of the prism are joined with optical cement, and the crystal axes are perpendicular to the plane of the diagram. The lower red ray exiting the prism undergoes refraction, which is not shown on this diagram. A Glan–Thompson prism is a type of polarizing prism similar to the Nicol prism and Glan–Foucault prism.

  5. Dispersion (optics) - Wikipedia

    en.wikipedia.org/wiki/Dispersion_(optics)

    In a dispersive prism, material dispersion (a wavelength-dependent refractive index) causes different colors to refract at different angles, splitting white light into a spectrum. A compact fluorescent lamp seen through an Amici prism. Dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency. [1]

  6. Prism spectrometer - Wikipedia

    en.wikipedia.org/wiki/Prism_spectrometer

    A prism spectrometer is an optical spectrometer which uses a dispersive prism as its dispersive element. The prism refracts light into its different colors ( wavelengths ). The dispersion occurs because the angle of refraction is dependent on the refractive index of the prism's material, which in turn is slightly dependent on the wavelength of ...

  7. File:Triplet prism with refraction angles.svg - Wikipedia

    en.wikipedia.org/wiki/File:Triplet_prism_with...

    A triplet prism, showing the apex angles (, , and ) of the three elements, and the angles of incidence and refraction ′ at each interface. The deviation angle of the ray transmitted by the prism is shown as δ {\displaystyle \delta } .

  8. Refractometer - Wikipedia

    en.wikipedia.org/wiki/Refractometer

    Schematic setup of an automatic refractometer: An LED light source is imaged under a wide range of angles onto a prism surface which is in contact with a sample. Depending on the difference in the refractive index between prism material and sample the light is partly transmitted or totally reflected.

  9. List of refractive indices - Wikipedia

    en.wikipedia.org/wiki/List_of_refractive_indices

    Refraction at interface. Many materials have a well-characterized refractive index, but these indices often depend strongly upon the frequency of light, causing optical dispersion. Standard refractive index measurements are taken at the "yellow doublet" sodium D line, with a wavelength (λ) of 589 nanometers.