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| Alphabetical [« »] did 5 differed 1 difference 2 differences 4 different 6 difficult 1 dignity 1 | Frequency [« »] 4 constant 4 conversely 4 definite 4 differences 4 direct 4 direction 4 disappears | Hermann Ludwig Ferdinand von Helmholtz On the Conservation of Force IntraText - Concordances differences |
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1 I| discussed the characteristic differences which exist between the 2 I| thing is common to all these differences; they all need a moving 3 I| in machines corresponding differences in the power and duration 4 I| moving force required. These differences, which correspond to the