What legacy remains the core contribution of the initial, precise, heat-measuring science associated with Atwater?

Answer

The language and the unit of measure for assessing physical energy content.

The historical trajectory of calorie counting demonstrates a divergence between scientific measurement and behavioral application. The core, lasting contribution of Atwater and his colleagues was purely scientific: they established the essential language and the concrete unit of measure (the calorie/kilocalorie) necessary to quantify the physical energy potential locked within food substances. This provided the objective foundation. While Lulu Hunt Peters later provided the behavioral instructions on how to use this unit for dieting, it was Atwater's work that supplied the scientifically validated method for assessing the energy content itself, without which the popular diet culture could not have existed.

What legacy remains the core contribution of the initial, precise, heat-measuring science associated with Atwater?

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