Sanakirja.org

Esimerkit

• The entire east sky provided an equivalent exitance of 19 kilolumens per square meter (Method 1) [...]
• For a given temperature, exitance is a function of wavelength. This results in a family of spectral exitance curves dependent on temperature. The equation for spectral exitance is the Planck equation: [...]
• In practice, unless otherwise indicated, it is accepted that exitance is taken to be a hemispherical quantity.
• Exitance is the amount of power per unit area expressed in watts per square meter (w/m2), or square centimeter (w/cm2), that leaves a surface and is radiated into a hemisphere.