| René Just Haüy - 1807 - 478 σελίδες
...humidity produces the most sensible motions. Philosophers have sought also to measure the humidity of the air by the augmentation of weight undergone by certain substances, such as a tuft of wool, or salt, by absorbing the water contained in the air. But, besides that these methods were in themselves... | |
| William Nicholson - 1809 - 752 σελίδες
...to measure tiv humidity of the air by the augmentation of weight undergone by certain substance«. such as a tuft of wool, or portions of salt, by absorbing...employed were subject to alterations which would make them lose their hygrométrie quality more or less promptly; they had, therefore, the double inconvenience... | |
| William Nicholson - 1809 - 700 σελίδες
...also to measure the humidity of the air by the augmentation of weight undergone by certain substancn. such as a tuft of wool, or portions of salt, by absorbing...themselves very imperfect, the bodies employed were snbject to alterations which would make them lose their hygromelrie quality more or less promptly;... | |
| William Nicholson - 1819 - 394 σελίδες
...produces the most sensible motions. Philosophers have sought also to measure the humidity of the air br the augmentation of weight undergone by certain substances,...But, besides that these methods were in themselves Tery imperfect, the bodies employed were subject to alterations, which would make them lose their hygrometic... | |
| Friedrich Christian Accum - 1824 - 386 σελίδες
...moisture produces the most sensible motions. Philosophers have sought also to measure the humidity of the air by the augmentation of weight undergone by certain...contained in the air. But, besides that these methods are in themselves very imperfect, the bodies employed were subject to alterations which would make... | |
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