Confused by terminology

Discussion in 'Lighting' started by Jaco Schoeman, 10 Aug 2010.

  1. Jaco Schoeman

    Jaco Schoeman MASA Contributor

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    Guys, I am wanting to post a thread on LED's that has become a topic that surfaced on MASA lately again... I have read different opinions about the viability of LED vs. MH etc. etc. etc.

    Now, what I am wanting to understand is what terms or values are the important ones when we look at how "good" a light is.

    What is Lumen and how important is lumens?
    What is PAR, and how important is PAR?

    Which if the two is most important, and can anyone supply me with Lumen values for a 150W MH? I have the Lumen value of the LED's, and no PAR values, so I would like to have a look at both... ;)
     
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  3. neo

    neo

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    you have now entered the dark side of light:lol:
    check out What is a Lumen?
    , good luck
     
  4. vatso

    vatso

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    Here is some info hope it helps


     
  5. vatso

    vatso

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    Some more info

     
  6. FransSny

    FransSny

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    good luck Jaco....almost like trying to figure out the Big Bang :p

    Google ANSI light measurement, might help ....or just confuse you more.

    What I have read is 1 W (CFL) = ROUGHLY 65 lumens (flux) but I might be wrong
     
    Last edited: 10 Aug 2010
  7. neo

    neo

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    Jaco Schoeman likes this.
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