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“irradiance”
irradiance, radiant flux density
1. A radiometric term for the rate at which radiant energy is transferred across a unit area of a surface, commonly measured in watts per square meter.
2. A radiometric term for the rate at which radiant energy in a radiation field is transferred across a unit area of a surface (real or imaginary) in a hemisphere of directions.
2. A radiometric term for the rate at which radiant energy in a radiation field is transferred across a unit area of a surface (real or imaginary) in a hemisphere of directions.
In general, irradiance depends on the orientation of a surface. The radiant energy may be confined to a narrow range of frequencies (spectral or monochromatic irradiance which is characterized by a single frequency) or integrated over a broad range of frequencies.
This entry is located in the following units:
fluct-, flucti-, -flux, flu-, flum-, -fluent, -fluence
(page 7)
radio-, radi-, rad-
(page 1)
Word Entries containing the term:
“irradiance”
diffuse radiation (s) (noun), diffuse insolation, diffuse irradiance, diffuse illuminance, diffuse sunlight
All of these terms are descriptions of solar radiation that is received indirectly on the surface of the earth, rather than directly from solar rays: "Diffuse radiation, etc. are all caused by the scattering that is a result of clouds, fog, haze, dust, or other barriers in the atmosphere."
This entry is located in the following unit:
fus-, fun-, fund-, fut-, found-
(page 2)
total (solar) irradiance
The solar radiation received at the top of the earth's atmosphere.
This entry is located in the following unit:
total-, tot- +
(page 1)
Word Entries at Get Words:
“irradiance”
irradiance
The direct, diffuse, and reflected solar radiation that strikes a surface.
Usually expressed in kilowatts per square meter. Irradiance multiplied by time equals insolation.
This entry is located in the following unit:
Photovoltaic Conversion Efficiency Terms +
(page 11)