Luminance or Illuminance ?

Started Mar 28, 2013 | Discussions thread
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Tom Axford Veteran Member • Posts: 3,252
Re: Luminance or Illuminance ?

The definitions I have seen distinguish between the brightness of a surface (luminance) and the amount of light incident on a surface (illuminance). I'm not sure how widely recognised this distinction is, but using google produces some confirmation:

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