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#378 – Anna Frebel: Origin and Evolution of the Universe, Galaxies, and Stars
Lex Fridman Podcast
The Absorption Lines in the Solar Spectrum
The solar spectrum for reference, you know, all the dips are overlapping because the abundance of all the elements is so high. The old stars have so little off all the elements that they're only occasionally these dips that then indicate, okay, that one at that wavelength was iron. And here we have carbon and there's magnesium and sodium. There's a little strontium line here. So we have a much easier way to map out this barcode that the spectrum pretty much is at the end of the day.
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