"BigWallop" wrote in message
om...

"Trevor Smith" wrote in message
...
Could anyboby explain why the 12v 50w halogen lamps I have in my kitchen
appear brighter than the 240v 50w halogen Par 20 lamps I have fitted in
the
lounge?

Higher colour value. Whiter light. Dichrioc prismatic diffusion.



********

Its all to do with the filament size. On a 12V lamp the filament guage is
much lower and the filament winding diameter is larger, and there are fewer
turns so:-

1) More exposed surface area so more light can escape from the confines of
the filament and

2) A 12V filament is far more robust and will last longer