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- Lumen_second abstract "In photometry, the lumen second (lm s or lm⋅s) is the SI derived unit of luminous energy. It is based on the lumen, the SI unit of luminous flux, and the second, the SI base unit of time.The lumen second is sometimes called the talbot (symbol T). This name was coined in 1937 by the Committee on Colorimetry, Optical Society of America, in honor of the early photographer William Fox Talbot. The talbot is exactly equal to the lumen second:1 T = 1 lm⋅sThe use of the symbol T for talbots conflicts with T as the symbol for the tesla, the SI unit of magnetic flux density.An older name for the lumen second was the lumberg.[citation needed]The photometric unit lumerg, also proposed by the Committee on Colorimetry in 1937, correlates with the old CGS unit erg in the same way that the lumen second correlates with the radiometric unit joule, so that 107 lumerg = 1 lm⋅s.".
- Lumen_second wikiPageID "1930127".
- Lumen_second wikiPageRevisionID "541124568".
- Lumen_second hasPhotoCollection Lumen_second.
- Lumen_second subject Category:Photometry.
- Lumen_second subject Category:SI_derived_units.
- Lumen_second subject Category:Units_of_luminous_energy.
- Lumen_second type Abstraction100002137.
- Lumen_second type DefiniteQuantity113576101.
- Lumen_second type Measure100033615.
- Lumen_second type SIDerivedUnits.
- Lumen_second type UnitOfMeasurement113583724.
- Lumen_second type UnitsOfLuminousEnergy.
- Lumen_second comment "In photometry, the lumen second (lm s or lm⋅s) is the SI derived unit of luminous energy. It is based on the lumen, the SI unit of luminous flux, and the second, the SI base unit of time.The lumen second is sometimes called the talbot (symbol T). This name was coined in 1937 by the Committee on Colorimetry, Optical Society of America, in honor of the early photographer William Fox Talbot.".
- Lumen_second label "Lumen second".
- Lumen_second label "Lumensekunde".
- Lumen_second label "Talbot (fotometría)".
- Lumen_second label "Люмен-секунда".
- Lumen_second sameAs Lumensekunde.
- Lumen_second sameAs Talbot_(fotometría).
- Lumen_second sameAs m.066ytj.
- Lumen_second sameAs Q910311.
- Lumen_second sameAs Q910311.
- Lumen_second sameAs Lumen_second.
- Lumen_second wasDerivedFrom Lumen_second?oldid=541124568.
- Lumen_second isPrimaryTopicOf Lumen_second.