W
WM
- Jan 1, 1970
- 0
I am in the UK and am not a lighting specialist. Treat me gently!
I read the posts in a recent thread in this group and am interested
in trying out a triphosphor tube at home as a light for my home
office because I understand that the triphosphor tube shines brightly
and gives a very natural light.
(1) Can I simply swap in a T8 triphosphor tube where I had an
ordinary (halophosphate?) T8 tube. Or do I need to check something
else? Is it better to buy a whole light than just the tube?
(2) I would like to have the triphosphor give a light as close to
daylight as possible but all I can find is something called "colour
rendering index". I got confused after reading this:
----------------------- QUOTE --------------------------
Fluorescent lamps typically have CRIs in the range 55-85, with 80-85
being classed by the manufacturers as 'good' or 'very good' colour-
rendering.
I beg to differ! To my critical eyes, LIGHT FROM 'TRIPHOSPHOR'
FLUORESCENTS WITH A CRI OF 80-85 IS GHASTLY; extremely flat and
lifeless. By comparison, a nice incandescent quartz-halogen spotlight
really gives vitality to whatever it shines on!
[from http://www.techmind.org/colour/coltemp.html] My capitals.
----------------------- UNQUOTE --------------------------
Hey, now that really confuses me. Maybe a light source that is
genuinely close to daylight paradoxically looks unnatural when it is
the sole source of light.
Also I read in this group:
Can someone kindly advise me how to understand this info! Am I
better staying with the tungesten halogen floodlight I am using
rather than going to triphosphor?
Thank you.
I read the posts in a recent thread in this group and am interested
in trying out a triphosphor tube at home as a light for my home
office because I understand that the triphosphor tube shines brightly
and gives a very natural light.
(1) Can I simply swap in a T8 triphosphor tube where I had an
ordinary (halophosphate?) T8 tube. Or do I need to check something
else? Is it better to buy a whole light than just the tube?
(2) I would like to have the triphosphor give a light as close to
daylight as possible but all I can find is something called "colour
rendering index". I got confused after reading this:
----------------------- QUOTE --------------------------
Fluorescent lamps typically have CRIs in the range 55-85, with 80-85
being classed by the manufacturers as 'good' or 'very good' colour-
rendering.
I beg to differ! To my critical eyes, LIGHT FROM 'TRIPHOSPHOR'
FLUORESCENTS WITH A CRI OF 80-85 IS GHASTLY; extremely flat and
lifeless. By comparison, a nice incandescent quartz-halogen spotlight
really gives vitality to whatever it shines on!
[from http://www.techmind.org/colour/coltemp.html] My capitals.
----------------------- UNQUOTE --------------------------
Hey, now that really confuses me. Maybe a light source that is
genuinely close to daylight paradoxically looks unnatural when it is
the sole source of light.
Also I read in this group:
[my capitals]I use a 300W floodlight with glass front and wire shield above
my workshop bench. I like the heat and sheer intensity of the
light which feels like working in the sun. This is particularly
nice in the winter. The GENUINELY FULL SPECTRUM OF A TUNGSTEN
HALOGEN LAMP would make it the ideal SAD lamp.
Can someone kindly advise me how to understand this info! Am I
better staying with the tungesten halogen floodlight I am using
rather than going to triphosphor?
Thank you.