Talk:1308: Christmas Lights
I think the spectrum at the top of the tree is a specific star. The Sun. 184.108.40.206 16:21, 26 December 2013 (UTC)
Presumably the top is gold? 220.127.116.11 07:47, 25 December 2013 (UTC)
Also the spike in the near IR of the large graph is likely to be a mercury line. I think fires would have a smoother curve of a black body. 18.104.22.168 06:47, 25 December 2013 (UTC)
Also the light at the top of the tree seems to be emitting in the UV range. Perhaps it’s supposed to be a fluorescent lamp? 22.214.171.124 07:30, 25 December 2013 (UTC)
I'm thinking it's a "white" LED. 126.96.36.199 07:50, 25 December 2013 (UTC)
I think the one at the top matches the profile of a star... 188.8.131.52 08:18, 25 December 2013 (UTC)
From a rough pixel-measurement and assuming a linear scale, the peak on the large spectrum is at around 800 nm. I'm not sure what to make from the peak, but infrared light is heat radiation, so it could be the representation of sharing warmth and love. 15:15, 25 December 2013 (UTC)
The top spectrum closely matches that of a cool-white LED. The strong peak in the blue, the broad peak from red to green, and the dip in the cyan range is a real give-away. Exactly like LEDs.ExternalMonolog (talk) 01:00, 26 December 2013 (UTC)ExternalMonolog
I strongly disagree with the explanation's assertion that the peak in the large spectrum, the fire, is the 4.3µm CO2 emission listed in the source given. The peak in the source's spectrum is clearly outside of the near-infrared spectrum and it is just as clearly on the long wave side of the black-body peak in the chart. The comic doesn't even show these wavelengths at all. If, as it appears, that the chart in the comic is a semi-log plot, then the peak is roughly in the 1,000~1,200nm range.ExternalMonolog (talk) 01:20, 26 December 2013 (UTC)ExternalMonolog
- Misleading picture in link
The picture :
found in the link of the explanation is strongly misleading.
Visible radiation ( red to violet ) is 700 to 400 nm. The
example spectrum in the middle does not fit to this.
Maybe some guesswork here results from that link.
After some "metering" with a ruler on the screen my guess
for the spike in the fireplace spectum now is ca. 1.5 or 2.1 µm ,
being the first harmonic of either O-H or CO2 respectively. 184.108.40.206 23:23, 26 December 2013 (UTC)