irradiance - Definition. Was ist irradiance
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Was (wer) ist irradiance - definition

AREAL DENSITY OF INCOMING RADIANT FLUX
Spectral irradiance; Radiation flux; W/m2; Radiant flux density; W/m²; Photon irradiance

irradiance         
¦ noun
1. Physics the flux of radiant energy per unit area.
2. literary the fact of shining brightly.
Irradiance         
·noun ·Alt. of Irradiancy.
Irradiance         
In radiometry, irradiance is the radiant flux received by a surface per unit area. The SI unit of irradiance is the watt per square metre (W⋅m−2).

Wikipedia

Irradiance

In radiometry, irradiance is the radiant flux received by a surface per unit area. The SI unit of irradiance is the watt per square metre (W⋅m−2). The CGS unit erg per square centimetre per second (erg⋅cm−2⋅s−1) is often used in astronomy. Irradiance is often called intensity, but this term is avoided in radiometry where such usage leads to confusion with radiant intensity. In astrophysics, irradiance is called radiant flux.

Spectral irradiance is the irradiance of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. The two forms have different dimensions and units: spectral irradiance of a frequency spectrum is measured in watts per square metre per hertz (W⋅m−2⋅Hz−1), while spectral irradiance of a wavelength spectrum is measured in watts per square metre per metre (W⋅m−3), or more commonly watts per square metre per nanometre (W⋅m−2⋅nm−1).

Beispiele aus Textkorpus für irradiance
1. Many have published evidence suggesting changes are due to either a natural 1,500 year climate cycle or variations in the sun‘s irradiance.
2. These particles disrupt satellites and are hazardous to astronauts outside the protection of Earth‘s magnetic field. – Monitoring the sun‘s energy output (the "total solar irradiance" or "solar constant") as well as variations in the sun‘s extreme ultraviolet radiation, both of which are important to understand the impact of solar variability on Earth‘s climate. – Identifying the source regions and acceleration mechanisms of the solar wind, a thin stream of ionized gas that constantly flows from the sun and buffets Earth‘s magnetosphere.