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"By 1869, he had mapped the entire solar spectrum." I'm not sure, but I would guess he'd only mapped the visible solar spectrum, not the whole thing, right? Anyone know? -- John Owens
Known for: "Ångström exponent", but if I go to that page it says: "In 1929, the Swedish physicist Anders K. Ångström found" a different man named Angstrom? 185.22.252.88 (talk) 17:05, 5 November 2021 (UTC)Reply