Hermann von Helmholtz

A moving body whose motion was not retarded by any resisting force would continue to move to all eternity. ↗

— Hermann von Helmholtz

#body #continue #eternity #force #motion

A raised weight can produce work, but in doing so it must necessarily sink from its height, and, when it has fallen as deep as it can fall, its gravity remains as before, but it can no longer do work. ↗

— Hermann von Helmholtz

#deep #doing #fall #fallen #gravity

But heat can also be produced by the friction of liquids, in which there could be no question of changes in structure, or of the liberation of latent heat. ↗

— Hermann von Helmholtz

#changes #could #friction #heat #latent

Each individual fact, taken by itself, can indeed arouse our curiosity or our astonishment, or be useful to us in its practical applications. ↗

— Hermann von Helmholtz

#arouse #astonishment #curiosity #each #fact

Iron which is brought near a spiral of copper wire, traversed by an electrical current, becomes magnetic, and then attracts other pieces of iron, or a suitably placed steel magnet. ↗

— Hermann von Helmholtz

#becomes #brought #copper #current #electrical

Now, the external work of man is of the most varied kind as regards the force or ease, the form and rapidity, of the motions used on it, and the kind of work produced. ↗

— Hermann von Helmholtz

#external #force #form #kind #man

Reason we call that faculty innate in us of discovering laws and applying them with thought. ↗

— Hermann von Helmholtz

#call #discovering #faculty #innate #laws

The law in question asserts, that the quantity of force which can be brought into action in the whole of Nature is unchangeable, and can neither be increased nor diminished. ↗

— Hermann von Helmholtz

#asserts #brought #diminished #force #increased