Timothy Murphy wrote:
Phil wrote:

How many posters in this Newsgroup does it take to change a lightbulb?

Talking of light bulbs,
it seems extraordinary that they never say how much light they give out,
but only how much power they consume.

Look on the side of the packets.

There is often a number "1000 lumens" for example.
100lm/W is excellent, for the best fluorescants, 180lm/W is typically only
achievable with yellow sodium monochromatic low-pressure lights, 15lm/W or so
is fairly typical for your average tungsten light bulb, and CF lights can
be around 50-60lm/W.