Accurate experiments have shown that the quantity of heat which is developed by a chemical process - for instance, in burning a pound of pure carbon into carbonic acid - is perfectly constant, whether the combustion is slow or rapid, whether it takes place all at once or by intermediate stages.


Translated by E. Atkinson, Popular Lectures on Scientific Subjects, First Series, On the Conservation of Force (p. 343)

Hermann von Helmholtz Quotes

Accurate experiments have shown that the quantity of heat which is developed by a chemical process - for instance, in burning a pound of pure carbon...

Accurate experiments have shown that the quantity of heat which is developed by a chemical process - for instance, in burning a pound of pure carbon...

Accurate experiments have shown that the quantity of heat which is developed by a chemical process - for instance, in burning a pound of pure carbon...

Accurate experiments have shown that the quantity of heat which is developed by a chemical process - for instance, in burning a pound of pure carbon...