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  1. A

    Cree X Bright LEDS - Picture included

    Nope. They aren't.
  2. A

    Calculation help needed:

    Ugh, physics gurus: Whats the correct conversion from lumen to candela? I've always thought it goes as follows: lumen is defined as candela/sr. Ok. So, for 18lm flux, the calculation goes as follows: 110 degrees (of 360) is 122.22222 in steradians. Ok. Then multiply the degree value w/flux...

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