So it looks like you need a bit more than a prism to see Fraunhofer lines, but t... | Hacker News

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monkeycantype on June 30, 2020 | parent | context | favorite | on: Declining eyesight improved by looking at deep red...

So it looks like you need a bit more than a prism to see Fraunhofer lines, but there seem to be online description of how to do it with a with a prism and a CD, maybe you don't even need a prism, there seem to be 'make your own spectroscope' tutorials than mention building one with cereal box, and maybe a lens of some kind

mrob on June 30, 2020 [–]

The D line is probably more easily seen in a colored flame made by adding salt water to an alcohol-burner flame:

https://en.wikipedia.org/wiki/Emission_spectrum#/media/File:...

monkeycantype on June 30, 2020 | [–]

that sounds like a project to do with my kids, thanks : )

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