Template:Radiometry coefficients
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| Quantity | SI units | Notes | |
|---|---|---|---|
| Name | Sym. | ||
| Hemispherical emissivity | ε | — | Radiant exitance of a surface, divided by that of a black body at the same temperature as that surface. |
| Spectral hemispherical emissivity | εν or ελ |
— | Spectral exitance of a surface, divided by that of a black body at the same temperature as that surface. |
| Directional emissivity | εΩ | — | Radiance emitted by a surface, divided by that emitted by a black body at the same temperature as that surface. |
| Spectral directional emissivity | εΩ,ν or εΩ,λ |
— | Spectral radiance emitted by a surface, divided by that of a black body at the same temperature as that surface. |
| Hemispherical absorptance | A | — | Radiant flux absorbed by a surface, divided by that received by that surface. This should not be confused with "absorbance". |
| Spectral hemispherical absorptance | Aν or Aλ |
— | Spectral flux absorbed by a surface, divided by that received by that surface. This should not be confused with "spectral absorbance". |
| Directional absorptance | AΩ | — | Radiance absorbed by a surface, divided by the radiance incident onto that surface. This should not be confused with "absorbance". |
| Spectral directional absorptance | AΩ,ν or AΩ,λ |
— | Spectral radiance absorbed by a surface, divided by the spectral radiance incident onto that surface. This should not be confused with "spectral absorbance". |
| Hemispherical reflectance | R | — | Radiant flux reflected by a surface, divided by that received by that surface. |
| Spectral hemispherical reflectance | Rν or Rλ |
— | Spectral flux reflected by a surface, divided by that received by that surface. |
| Directional reflectance | RΩ | — | Radiance reflected by a surface, divided by that received by that surface. |
| Spectral directional reflectance | RΩ,ν or RΩ,λ |
— | Spectral radiance reflected by a surface, divided by that received by that surface. |
| Hemispherical transmittance | T | — | Radiant flux transmitted by a surface, divided by that received by that surface. |
| Spectral hemispherical transmittance | Tν or Tλ |
— | Spectral flux transmitted by a surface, divided by that received by that surface. |
| Directional transmittance | TΩ | — | Radiance transmitted by a surface, divided by that received by that surface. |
| Spectral directional transmittance | TΩ,ν or TΩ,λ |
— | Spectral radiance transmitted by a surface, divided by that received by that surface. |
| Hemispherical attenuation coefficient | μ | m−1 | Radiant flux absorbed and scattered by a volume per unit length, divided by that received by that volume. |
| Spectral hemispherical attenuation coefficient | μν or μλ |
m−1 | Spectral radiant flux absorbed and scattered by a volume per unit length, divided by that received by that volume. |
| Directional attenuation coefficient | μΩ | m−1 | Radiance absorbed and scattered by a volume per unit length, divided by that received by that volume. |
| Spectral directional attenuation coefficient | μΩ,ν or μΩ,λ |
m−1 | Spectral radiance absorbed and scattered by a volume per unit length, divided by that received by that volume. |
Usage
This template displays a table of radiometry coefficients for use in articles about radiometry. It may also serve as a navigation box at the end of corresponding articles.
Parameters
Documentation of parameters:
Parameter 1
1 = undefined or empty
The template will display the table's title "Radiometry coefficients".
1 = <number>
The template will display the table number as part of the table header in the following form: "Table <number>. Radiometry coefficients", where <number> is a placeholder for the number (or other table designation) given as parameter.
See also
- Template:SI radiometry units
- Template:SI light units
- Template:SI photon units
- Template:Navbar-header
