In preparation for many things, including becoming a QA/QC inspector in the event the IgCC is really rolled out and implemented, a couple of things (well, mostly one) really puzzles me.... the Color Temperature thing.
We see it all the time on light bulb boxes (my CF bulbs are 2700 K bulbs).
I fell into an older lighting fundamentals handbook which actually explains how they come up with the Kelvin scale (and it seems complicated and stupid to me.. a scale of 1-10 seems easier).
the "K" number comes from the color of a comparable blackbody radiator being raised from absolute zero (0 Kelvin or -460 F) to, let's say, 2700 Kelvin (which I guess would be 2240 F). The "blackbody radiator" is black iron; since I don't remember my metallury so well, I'd actually assume black iron is going to melt at/before 2240 before it becomes the color of "soft white".
Lighting calculations require us to use the 2700 number..
anybody else think this is dumb?
We see it all the time on light bulb boxes (my CF bulbs are 2700 K bulbs).
I fell into an older lighting fundamentals handbook which actually explains how they come up with the Kelvin scale (and it seems complicated and stupid to me.. a scale of 1-10 seems easier).
the "K" number comes from the color of a comparable blackbody radiator being raised from absolute zero (0 Kelvin or -460 F) to, let's say, 2700 Kelvin (which I guess would be 2240 F). The "blackbody radiator" is black iron; since I don't remember my metallury so well, I'd actually assume black iron is going to melt at/before 2240 before it becomes the color of "soft white".
Lighting calculations require us to use the 2700 number..
anybody else think this is dumb?