An difríocht idir athruithe ar: "Dlí Hess"
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Líne 4:
Ainmnítear an dlí i ndiaidh [[Germain Henri Hess|Germain Hess]], [[Ceimiceoir|ceimiceoir]] agus [[Lia|lia]] [[An Rúis|Rúiseach]] a rugadh san [[An Eilvéis|Eilvéis]] a d’fhoilsigh é i 1840.
The principle of conservation of energy. https://web.archive.org/web/20150109195637/http://www.science.uwaterloo.ca/~cchieh/cact/c120/hess.html</ref>
== Tuilleadh léitheoireachta ==
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