Very odd that energy is not mentioned at all in the article. I do not believe that she conceived of conservation of energy in the modern sense, where energy i

Very odd that energy is not mentioned at all in the article. I do not believe that she conceived of conservation of energy in the modern sense, where energy includes heat and chemical energy, but she saw that Newton's laws of motion conserved something besides momentum, and she somehow tested that experimentally for some mechanical systems. Anyone have more info on this?