On 20/01/2017 19:38, Scott wrote:
On Fri, 20 Jan 2017 15:26:48 +0000, dennis@home
wrote:

On 20/01/2017 14:44, Brian Gaff wrote:
I don't like halogen. gives me a headache even though I cannot see. I get
this spreading green yellow flashing haze when I go near Halogen lighting.
Goes to prove I guess that even blind eyes can give strange effects.
Brian


The only difference between halogen and tungsten lights is the
temperature they run at.

Surely the temperature directly influences the frequency of the light
output?


It moves the peak of the curve slightly to the blue.
It doesn't make them emit any visible light that wasn't already visible.