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| Alphabetical [« »] near 4 necessarily 5 necessary 9 need 5 needed 1 needs 2 negatived 1 | Frequency [« »] 5 motions 5 move 5 necessarily 5 need 5 neither 5 obtain 5 order | Hermann Ludwig Ferdinand von Helmholtz On the Conservation of Force IntraText - Concordances need |
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1 I | these differences; they all need a moving force, which sets 2 I | works of the human hand all need the moving force of the 3 I | use a weight so that we need not stand the whole day 4 I | such a wheel, the water need not necessarily have a great 5 II| closing of the valve. But we need not here enter into those