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  2. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel's storage of numbers in binary format also affects its accuracy. [3] To illustrate, the lower figure tabulates the simple addition 1 + x − 1 for several values of x. All the values of x begin at the 15 th decimal, so Excel must take them into account. Before calculating the sum 1 + x, Excel first approximates x as a binary number

  3. Microsoft Office XML formats - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Office_XML_formats

    Besides differences in the schema, there are several other differences between the earlier Office XML schema formats and Office Open XML. Whereas the data in Office Open XML documents is stored in multiple parts and compressed in a ZIP file conforming to the Open Packaging Conventions, Microsoft Office XML formats are stored as plain single monolithic XML files (making them quite large ...

  4. Atmospheric radiative transfer codes - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_radiative...

    The radiative transfer equation is a monochromatic equation to calculate radiance in a single layer of the Earth's atmosphere. To calculate the radiance for a spectral region with a finite width (e.g., to estimate the Earth's energy budget or simulate an instrument response), one has to integrate this over a band of frequencies (or wavelengths ...

  5. Spectral flux density - Wikipedia

    en.wikipedia.org/wiki/Spectral_flux_density

    The integrals of spectral radiance (or specific intensity) with respect to solid angle, used above, are singular for exactly collimated beams, or may be viewed as Dirac delta functions. Therefore, the specific radiative intensity is unsuitable for the description of a collimated beam, while spectral flux density is suitable for that purpose. [ 18 ]

  6. Bidirectional scattering distribution function - Wikipedia

    en.wikipedia.org/wiki/Bidirectional_scattering...

    BSSRDF (Bidirectional scattering-surface reflectance distribution function or Bidirectional surface scattering RDF) [4] [5] describes the relation between outgoing radiance and the incident flux, including the phenomena like subsurface scattering (SSS). The BSSRDF describes how light is transported between any two rays that hit a surface.

  7. Hexadecimal time - Wikipedia

    en.wikipedia.org/wiki/Hexadecimal_time

    The day is divided into 10 16 (16 10) hexadecimal hours, each hour into 100 16 (256 10) hexadecimal minutes, and each minute into 10 16 (16 10) hexadecimal seconds. History [ edit ]

  8. Radiance - Wikipedia

    en.wikipedia.org/wiki/Radiance

    Radiance is used to characterize diffuse emission and reflection of electromagnetic radiation, and to quantify emission of neutrinos and other particles. The SI unit of radiance is the watt per steradian per square metre (W·sr −1 ·m −2). It is a directional quantity: the radiance of a surface depends on the direction from which it is ...

  9. Flick (physics) - Wikipedia

    en.wikipedia.org/wiki/Flick_(physics)

    In optical engineering and telecommunications engineering, the flick is a unit of spectral radiance. One flick corresponds to a spectral radiance of 1 watt per steradian per square centimeter of surface per micrometer of span in wavelength (W·sr −1 ·cm −2 ·μm −1). This is equivalent to 10 10 watts per steradian per cubic meter (W·sr ...