What is the difference ...

[punchbuggi]

Between Luminous Flux (lm) and Lumen (lm)

??

The numbers that precede either of the two lm's, look the same to me

I don't see a difference (but then again I have been told that I possess "selective sighting")

:lolsign:

 

[IMSabbel]

Between Luminous Flux (lm) and Lumen (lm)

??

The numbers that precede either of the two lm's, look the same to me

I don't see a difference (but then again I have been told that I possess "selective sighting")

:lolsign:

The unit is called "lumen", the physical contant it descripes is "luminous Flux".

Its just the same as with "Energy" and "joule"