{"title":"Why Are Candle Flames Yellow?","authors":"S. R. Wilk","doi":"10.1093/OSO/9780197518571.003.0016","DOIUrl":null,"url":null,"abstract":"Candle flames have a warm, yellow color that is prized as nostalgic and romantic. But why is this the color of a standard candle flame? The usual explanation given is that the color is due to minute particles of soot that result from combustion of the candle wax, heated to incandescence, and emitting blackbody radiation. But this explanation cannot be correct. The shape of the emission spectrum is not that of a blackbody spectrum, and the peak occurs at much too short a wavelength, given the flame’s temperature. So what physical phenomenon does dictate the properties of the light from a candle?","PeriodicalId":211028,"journal":{"name":"Sandbows and Black Lights","volume":"10 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sandbows and Black Lights","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/OSO/9780197518571.003.0016","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Candle flames have a warm, yellow color that is prized as nostalgic and romantic. But why is this the color of a standard candle flame? The usual explanation given is that the color is due to minute particles of soot that result from combustion of the candle wax, heated to incandescence, and emitting blackbody radiation. But this explanation cannot be correct. The shape of the emission spectrum is not that of a blackbody spectrum, and the peak occurs at much too short a wavelength, given the flame’s temperature. So what physical phenomenon does dictate the properties of the light from a candle?
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