What would the line spectra look like on a colored glass light bulb?
Say I were to take a colored glass light bulb, plug it in and look at its emission spectra in a spectrascope. It has the same filaments or whatever as a normal incandescent light bulb. What would the spectra look like? Would it be one color or would it still be continous white light? Would it depend on the color of the glass?
They wouldn’t be line spectra exactly. Line spectra really applies to atomic emission, which is at very specific wavelengths.
They transmission curves for colored glass are more accurately called band spectra and look like this:
Blue:
http://valleydesign.com/Blue.pdf
Green:
http://valleydesign.com/Green.pdf
Yellow:
http://www.valleydesign.com/Yellow.pdf
Red:
http://valleydesign.com/Red.pdf
In contrast, the spectrum of a mercury arc lamp looks like this:
http://www.cairn-research.co.uk/Support/Technical%20Notes/Light%20Source/Lamp%20Spectra/mercury.gif
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