Talbot (photometry) 1930127 196674966 2008-03-08T02:27:16Z Caerwine 347371 In [[photometry (optics)|photometry]], the '''talbot''' ('''T''') is a nonstandard unit of [[luminous energy]], named in honor of the early [[photographer]] [[William Fox Talbot]]. It is exactly equal to the [[SI]] standard unit, the [[Lumen (unit)|lumen]] ยท [[second]]: :1 T = 1 lm · s Note that the use of the abbreviation T conflicts with the of T as the abbreviation for the [[tesla (unit)|tesla]], the SI unit of magnetic flux density. {{SI_light_units}} [[Category:Photometry]] [[Category:Units of luminous energy]]