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1:34 pm
Club Member
September 3, 2008
Online
I am looking for a headlight for my mountain bike to do some trail riding at night. Some companies advertise their lights by the watts and some by the lumens. Watt should I be looking for?
I found one light that puts out 25 watts
And another that puts out 255 lumens.
How do I know which light is brighter? Thanks guys. 
Um...what?
1:45 pm
Club Member
July 10, 2003
Offline
Paging Fred...
I used to wheel a lot. . .
1:48 pm
May 4, 2004
Offline
I've read quite a bit about flashlights over on http://www.candlepowerforums.com and there doesn't seem to be an easy way to convert watts to lumens. Watts is a measurement of how much power is consumed where lumens is a measurement of brightness. I found one thread over there that talks about watt to lumen conversion but there are likely to be others too - http://www.candlepowerforums.com/vb/sho ... p?t=212151
1:48 pm
May 4, 2004
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"JohnDF" wrote: Paging Fred...
I'm on it
2:11 pm
Yikes...that was a lot of physics for this early in the morning. Fourier transforms before 7:30...please post a disclaimer next time. ๐
Thanks for posting the link. There's a lot of information in there. Lumens it is!
3:33 pm
โIโve had a lovely dream,โ yawned the private stretching himself at his bunk.
โWho was she?โ asked his buddv.
โIt wasnโt she. It was a him. I dreamed I was staying at a hotel, and Sergeant. Lumens was the hotel porter.โ
โAnd what happened then?โ
โI sent him out in the pouring rain to get me a taxi.โ 
5:24 pm
February 5, 2003
Offline
check your toaster to see how many watts it uses, and how little light it gives off.
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