When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Dispersive prism - Wikipedia

    en.wikipedia.org/wiki/Dispersive_prism

    Photograph of a triangular prism, dispersing light Lamps as seen through a prism. In optics, a dispersive prism is an optical prism that is used to disperse light, that is, to separate light into its spectral components (the colors of the rainbow). Different wavelengths (colors) of light will be deflected by the prism at different angles. [1]

  3. 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]

  4. Prism (optics) - Wikipedia

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

    This is generally an unwanted effect of dispersive prisms. In some cases this can be avoided by choosing prism geometry which light enters and exits under perpendicular angle, by compensation through non-planar light trajectory, or by use of p-polarized light. Total internal reflection alters only the mutual phase between s- and p-polarized light.

  5. Refraction - Wikipedia

    en.wikipedia.org/wiki/Refraction

    Rainbows are formed by dispersion of light, in which the refraction angle depends on the light's frequency. Refraction is also responsible for rainbows and for the splitting of white light into a rainbow-spectrum as it passes through a glass prism. Glass and water have higher refractive indexes than air.

  6. Visible spectrum - Wikipedia

    en.wikipedia.org/wiki/Visible_spectrum

    The result is that red light is bent less sharply than violet as it passes through the prism, creating a spectrum of colors. Newton's observation of prismatic colors (David Brewster 1855) Newton originally divided the spectrum into six named colors: red, orange, yellow, green, blue, and violet.

  7. Prism spectrometer - Wikipedia

    en.wikipedia.org/wiki/Prism_spectrometer

    The aligned light then passes through the prism in which it is refracted twice (once when entering and once when leaving). Due to the nature of a dispersive element the angle with which light is refracted depends on its wavelength. This leads to a spectrum of thin lines of light, each being observable at a different angle.

  8. Herschel wedge - Wikipedia

    en.wikipedia.org/wiki/Herschel_Wedge

    The Herschel wedge reflects about 4.6% of the light that passes through one of the prism faces that is flat to 1/10 of the wavelength of the light. The remaining ~95.4% of the light and heat goes into the prism and exits through the other face and out the back door of the housing; thus, the excess light and heat is disposed of and not used for ...

  9. Dispersion relation - Wikipedia

    en.wikipedia.org/wiki/Dispersion_relation

    It is possible to make the effective speed of light dependent on wavelength by making light pass through a material which has a non-constant index of refraction, or by using light in a non-uniform medium such as a waveguide. In this case, the waveform will spread over time, such that a narrow pulse will become an extended pulse, i.e., be dispersed.