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Hermann Von Helmholtz QUOTES / QUOTATIONS
A moving body whose motion was not retarded by any resisting force would continue to move to all eternity.
Quotation of Hermann Von Helmholtz
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.
Quotation of Hermann Von Helmholtz
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.
Quotation of Hermann Von Helmholtz
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.
Quotation of Hermann Von Helmholtz
Each individual fact, taken by itself, can indeed arouse our curiosity or our astonishment, or be useful to us in its practical applications.
Quotation of Hermann Von Helmholtz
Heat can also be produced by the impact of imperfectly elastic bodies as well as by friction. This is the case, for instance, when we produce fire by striking flint against steel, or when an iron bar is worked for some time by powerful blows of the hammer.
Quotation of Hermann Von Helmholtz
I then endeavoured to show that it is more especially in the thorough conformity with law which natural phenomena and natural products exhibit, and in the comparative ease with which laws can be stated, that this difference exists.
Quotation of Hermann Von Helmholtz
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.
Quotation of Hermann Von Helmholtz
Not that I wish by any means to deny, that the mental life of individuals and peoples is also in conformity with law, as is the object of philosophical, philological, historical, moral, and social sciences to establish.
Quotation of Hermann Von Helmholtz
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.
Quotation of Hermann Von Helmholtz
Reason we call that faculty innate in us of discovering laws and applying them with thought.
Quotation of Hermann Von Helmholtz
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.
Quotation of Hermann Von Helmholtz
The older view of the nature of heat was that it is a substance, very fine and imponderable indeed, but indestructible, and unchangeable in quantity, which is an essential fundamental property of all matter.
Quotation of Hermann Von Helmholtz
These facts no longer permit us to regard heat as a substance, for its quantity is not unchangeable. It can be produced anew from the vis viva of motion destroyed; it can be destroyed, and then produces motion.
Quotation of Hermann Von Helmholtz
Water power was the first inorganic force which man learnt to use instead of his own labour or of that of domestic animals.
Quotation of Hermann Von Helmholtz
We must rather conclude from this that heat itself is a motion, an internal invisible motion of the smallest elementary particles of bodies.
Quotation of Hermann Von Helmholtz
What appeared to the earlier physicists to be the constant quantity of heat is nothing more than the whole motive power of the motion of heat, which remains constant so long as it is not transformed into other forms of work, or results afresh from them.
Quotation of Hermann Von Helmholtz
When carbon and oxygen atoms have rushed against each other, the newly-formed particles of carbonic acid must be in the most violent molecular motion - that is, in the motion of heat.
Quotation of Hermann Von Helmholtz
Windmills, which are used in the great plains of Holland and North Germany to supply the want of falling water, afford another instance of the action of velocity. The sails are driven by air in motion - by wind.
Quotation of Hermann Von Helmholtz
You all know how powerful and varied are the effects of which steam engines are capable; with them has really begun the great development of industry which has characterised our century before all others.
Quotation of Hermann Von Helmholtz