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Bog, hæftet The American Journal of Pharmacy, Vol. 18: Published by Authority of the Philadelphia College of Pharmacy; January, 1852 (Classic Reprint) af William Procter Jr.

The American Journal of Pharmacy, Vol. 18: Published by Authority of the Philadelphia College of Pharmacy; January, 1852 (Classic Reprint)

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Excerpt from The American Journal of Pharmacy, Vol. 18: Published by Authority of the Philadelphia College of Pharmacy; January, 1852

The basis upon which Beaume formed his scale was very nu fortunately chosen, and gave rise, at an early period, to changes that have completel... Læs mere

Excerpt from The American Journal of Pharmacy, Vol. 18: Published by Authority of the Philadelphia College of Pharmacy; January, 1852

The bas... Læs mere

Produktdetaljer:

Sprog:
Engelsk
ISBN-13:
9781334337215
Sideantal:
414
Udgivet:
01-11-2016
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Excerpt from The American Journal of Pharmacy, Vol. 18: Published by Authority of the Philadelphia College of Pharmacy; January, 1852

The basis upon which Beaume formed his scale was very nu fortunately chosen, and gave rise, at an early period, to changes that have completely modified even the theory of his instrument he obtained the zero for his scale for light liquids, or pese esprit, by immersion in water containing ten per cent. Of salt in solution, and the point to which it sunk in pure water he made divid ing the stem into like intervals he obtained the the intermediate degrees by subdivision. The hydrometer for heavy liquids of pese acide was differently adjusted, Water gave and the point to which it sunk in a solution containing fifteen per cent. Of salt, be marked as the interval doubled gave the the next the and so on. Now it is evident that if an error is made in obtaining the first interval, it becomes multiplied in ex tending the scale, and even with the greatest care it would be im possible to obtain two instruments graduated precisely alike; the only reliable plan is to subdivide'points obtained at the extremes of the scale, and this has been the practice with the makers since an early period.'

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This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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