Talk:Mass–energy equivalence

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Former good article nominee Mass–energy equivalence was a Natural sciences good articles nominee, but did not meet the good article criteria at the time. There are suggestions below for improving the article. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake.
March 16, 2009 Good article nominee Not listed
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En-dash or hyphen?[edit]

Mass-energy should be connected with a hyphen, not an en dash, I think, per WP:HYPHEN. "Mass-energy" is a compound modifier of equivalence, and mass and energy are related terms in this context. Any objection to a move?

This was briefly discussed in 2009. —Alex (ASHill | talk | contribs) 19:42, 17 February 2015 (UTC)

Actually, I guess since mass and energy are reversible (ie could be energy–mass and have the same meaning), the MOS says that en dash is marginally preferred. —Alex (ASHill | talk | contribs) 19:52, 17 February 2015 (UTC)
Yes, when the terms are linked rather than one modifying the other, usually in a balanced context, the en-dash should be used. The reversibility is a good indicator of this. Here the linkage is between alternatives, meaning that mass and energy are equivalent in the context: either would do, but the linkage emphasizes the equivalence. So I'm against a move. —Quondum 20:01, 17 February 2015 (UTC)