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Etendue

Etendue

Measure of the "spread" of light in an optical system.

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  1. View factor

    Proportion in thermal radiation.

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    Physical quantity in radiometry.

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    Statement relating differentiable symmetries to conserved quantities.

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    Monochrome light beam whose amplitude envelope is a Gaussian function.

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  5. Solid angle

    Measure in 3-dimensional geometry.

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    Optical image of the physical aperture stop.

    5.1%

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    Device that narrows or straightens a beam of particles or waves.

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Readers come from

Share of the 544 readers arriving from another article

  1. Spectral radiance

    Radiance of a surface.

    18%

  2. Vera C. Rubin Observatory

    Astronomical observatory in Chile.

    17%

  3. Radiance

    Physical quantity in radiometry.

    14%

  4. Luminance

    Photometric measure.

    8.5%

  5. View factor

    Proportion in thermal radiation.

    4.8%

  6. Objective (optics)

    Lens or mirror in optical instruments.

    2.4%

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    Maximum angle at which incoming sunlight can be captured by a solar concentrator.

    1.8%