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Oct 23, 2020 at 13:04 vote accept ThuBt
Oct 22, 2020 at 8:43 comment added Poutnik The important thing missing in many questions and in this particular one as well is the context. In your case, If they discussed a particular spectrum, that is an emission one, they would be true. If they discussed an absorption spectrum, they would be false.
Oct 22, 2020 at 8:40 answer added Pauling0304 timeline score: 2
Oct 22, 2020 at 6:14 comment added porphyrin yes both absorption and emission. You need different types of experiment to measure one or the other.
Oct 22, 2020 at 3:50 review Close votes
Nov 22, 2020 at 0:55
Oct 22, 2020 at 3:17 review First posts
Oct 22, 2020 at 3:28
Oct 22, 2020 at 3:13 history asked ThuBt CC BY-SA 4.0