Hermann von Helmholtz Quotes
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. 
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External | Work | Varied | Kind | Force |
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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
