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http://www.flickr.com/photos/83373487@N04/7636968446/in/photostream

The spectrum of a filament is given before, the left one have the lowest tempreture, the middle has the medium and the right one has the highest. My problem is, why the region of yellow light in the left has small range of spectrum while the red and green ones both enjoy large range? Also, why the temperature increasing results in the shrinking of red and green region and the expansion of yellow region? It's strange that the continous wavelenth has different pattern.

Thanks fo attention!

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That is a great question and a great observation! I was reading this because I thought I could tell you the answer, then looked at the phenomena you are talking about and I hope to learn the answer here as well! – mwengler Jul 24 '12 at 15:14
Thanks alot for you attention! – Golbez Jul 24 '12 at 15:30
Do you have any idea how were obtained the spectra ? – Shaktyai Jul 24 '12 at 20:57
Could be a crappy digital camera that does not reproduce colors properly? Or the color profile got changed somehow during editing? – ptomato Aug 8 '12 at 22:11

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