Candle power is total light. When focused you get higher intensity which is
candlepower/area. The intensity is what makes a light look bright. As you
know the wider the beam the less intense the light is. The 1million
candlepower lights tend to be too focused for driving lights, but use what
you need.
As for wattage to candlepower, you need some sort of efficiency factor in
there to be able to compare different types of bulbs, leds etc. Hence
higher effency the more candlepower you get per watt.
Hope that helps, my Physics book is packed away too.
Jay W
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--from sean---
Watts are a measure of energy. Candlepower is a measure of luminance (how
much light). You are trying to compare two different types of measurements.
There is probably a correlation between the two, but I can not find anything
here.
---from Jon---
I'm a bit confused about wattage vs. candlepower when referring to lights.
There doesn't seem to be a correlation between the two.
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