Lumen

Ask a question about 'Lumen' Start a new discussion about 'Lumen' Answer questions from other users Full Discussion Forum

• Lumen (unit)
  Lumen (unit)
  
  The lumen is the SI unit of luminous flux, a measure of the perceived power of light. Luminous flux differs from radiant flux, the measure of the total power of light emitted, in that luminous flux is adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light....
  , the SI unit of luminous flux
• Lumen (anatomy)
  Lumen (anatomy)
  
  A lumen in biology is the inside space of a tubular structure, such as an artery or intestine. By extension, a lumen can also be the inside space of a cellular component or structure, such as the endoplasmic reticulum....
  , the cavity or channel within a tubular structure
• Thylakoid lumen, the inner membrane space of the chloroplast
• 141 Lumen
  141 Lumen
  
  141 Lumen is a dark , large rocky asteroid 130 km in diameter orbiting in the Main belt near the Eunomia family of asteroids. It is not, however, physically related to the group, being of the wrong spectral class....
  , an asteroid discovered by the French astronomer Paul Henry in 1875
• Lumen (band)
  Lumen (band)
  
  Lumen is the Russian rock band from Ufa. They combine punk rock with traditional Russian rock. Founded in 1998. The band consider February 12 their birthday....
  , Russian rock/metal band

See also

• Candela
  Candela
  
  The candela is the SI base unit of luminous intensity; that is, power emitted by a light source in a particular direction, weighted by the luminosity function ....
  
• Lux
  Lux
  
  The lux is the SI unit of illuminance and luminous emittance. It is used in photometry as a measure of the apparent intensity of light hitting or passing through a surface....