apostilb

A unit of luminance defined by the German Illuminating Engineering Society (DLTG), one over the quantity pi times ten to the fourth powerstilb.

It is the brightness of a perfectly diffusing surface reflecting or emitting one lumen per square meter. One apostilb = one over pinit, or approximately 0.3183 nit. Symbol, asb.

Also called a blondel.

X

Sorry. No information on contributors is available for this page.

home | units index | search |  contact drawing of envelope |  contributors | 
help | privacy | terms of use