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. Hermann von Helmholtz begincapablecentury share on social
Reason we call that faculty innate in us of discovering laws and applying them with thought. Hermann von Helmholtz applycalldiscover Change image and share on social
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. Hermann von Helmholtz actionaffordair share on social
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. Hermann von Helmholtz comparativeconformitydifference share on social
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. Hermann von Helmholtz essentialfinefundamental share on social