Editing Talk:1308: Christmas Lights

That is not the right spectrum for the sun. [[Special:Contributions/108.162.219.193|108.162.219.193]] 20:44, 27 December 2013 (UTC)

I think the spectrum at the top of the tree is a specific star.  The Sun. [[Special:Contributions/173.245.56.64|173.245.56.64]] 16:21, 26 December 2013 (UTC)

If I am reading the graphs right, except for the very top there is no blue lights.
[[User:Traisjames|From the guy with his eye on the sky.]] ([[User talk:Traisjames|talk]]) 06:41, 25 December 2013 (UTC)

Presumably the top is gold? [[Special:Contributions/173.245.52.211|173.245.52.211]] 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. 
[[Special:Contributions/199.27.128.122|199.27.128.122]] 06:47, 25 December 2013 (UTC)

Could someone make a coloured version?[[User:Guru-45|Guru-45]] ([[User talk:Guru-45|talk]]) 07:22, 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? [[Special:Contributions/108.162.245.7|108.162.245.7]] 07:30, 25 December 2013 (UTC)

I'm thinking it's a "white" LED. [[Special:Contributions/108.162.216.56|108.162.216.56]] 07:50, 25 December 2013 (UTC)

I think the one at the top matches the profile of a star...
[[Special:Contributions/141.101.99.211|141.101.99.211]] 08:18, 25 December 2013 (UTC)

The spike is not in the "near" infrared, this is water and/or carbondioxide line. {{unsigned ip|108.162.231.214}}

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.[[User:ExternalMonolog|ExternalMonolog]] ([[User talk:ExternalMonolog|talk]]) 01:00, 26 December 2013 (UTC)ExternalMonolog

[http://i.imgur.com/hCbUpAl.png Here] is a "filled-in" version of the comic.[[User:Guru-45|Guru-45]] ([[User talk:Guru-45|talk]]) 17:06, 25 December 2013 (UTC)

:Very nice, Guru![[User:ExternalMonolog|ExternalMonolog]] ([[User talk:ExternalMonolog|talk]]) 01:35, 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.[[User:ExternalMonolog|ExternalMonolog]] ([[User talk:ExternalMonolog|talk]]) 01:20, 26 December 2013 (UTC)ExternalMonolog

:The picture of Guru-45 a few lines above is great and explaining the situation very well. It should be included in the explain. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 16:04, 27 December 2013 (UTC)

;Misleading picture in link

The picture :

http://en.wikipedia.org/wiki/File:Flame_detection_spectrum.JPG

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. [[Special:Contributions/108.162.231.220|108.162.231.220]] 23:23, 26 December 2013 (UTC)

     I agree that the color band representing the spectrum of visible light given is not directly related to the (human) visible  
      spectrum in the source (Flame Detection). The visible spectrum ranges from about 770nm to about 395nm, or about one       octave. ExternalMonog.


"an angel, but still usually lit" ... aren't angels glowing in general? Did you ever see an angel who wasn't glowing? :-) -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 10:55, 27 December 2013 (UTC)