Hermann von Helmholtz Quote: No.4
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Each individual fact, taken by itself, can indeed arouse our curiosity or our astonishment, or be useful to us in its practical applications. Hermann von Helmholtz | Refcard PDF ↑
Each individual fact, taken by itself, can indeed arouse our curiosity or our astonishment, or be useful to us in its practical applications. Hermann von Helmholtz | Refcard PDF ↑