Sunday 10 December 2017

Coledale Inn filament lamp at Kong Winter Series

We were sat waiting for the results of the Kong Winter Series fell race when I noticed this filament lamp. Unfortunately the individual strands haven't come out in the photograph The light is just on the yellow side of white. Looking at a black body spectrum it puts the temperature at about 4000 degrees Kelvin. http://hyperphysics.phy-astr.gsu.edu/hbase/bbrc.html