Difference between revisions of ".Mzc2.NzUwNA"
(Created page with "[ 55 ] ber) 17 degrees less than it was in the months of August and September. 108. I hope this paradox will be explained, and that the principles which may clear it up wil...") |
|||
| Line 2: | Line 2: | ||
ber) 17 degrees less than it was in the months of | ber) 17 degrees less than it was in the months of | ||
August and September. | August and September. | ||
| + | |||
108. I hope this paradox will be explained, and | 108. I hope this paradox will be explained, and | ||
that the principles which may clear it up will draw | that the principles which may clear it up will draw | ||
| − | useful consequences along with them. Those | + | useful consequences along with them. Those phi- |
| − | losphers who look upon | + | losphers who look upon evaporation as a dissolution |
of water by air in the manner of menstrua, that | of water by air in the manner of menstrua, that | ||
| − | is, by affinity, will easily apply their | + | is, by affinity, will easily apply their principle to the |
| − | solution of part of these phaenomena The | + | solution of part of these phaenomena The disso- |
lution is greater when the menstruum is warmer, and | lution is greater when the menstruum is warmer, and | ||
consequently the air must keep a greater quantity of | consequently the air must keep a greater quantity of | ||
water in dissolution, and suffere a less part of it to | water in dissolution, and suffere a less part of it to | ||
| − | beprecipitated, in fummcr than in winter. I | + | beprecipitated, in fummcr than in winter. I can- |
not but allow that this system is extremely specious, | not but allow that this system is extremely specious, | ||
and that many phznomena are very happily ex- | and that many phznomena are very happily ex- | ||
| Line 19: | Line 20: | ||
in which, without contending that ai r really acts as | in which, without contending that ai r really acts as | ||
a menstruum with respect to water, he demonstrates, | a menstruum with respect to water, he demonstrates, | ||
| − | by a parallel very well kept up, that all the | + | by a parallel very well kept up, that all the chemi- |
cal expressions concerning dissolutions may with | cal expressions concerning dissolutions may with | ||
| − | propriety be applied to describe the several | + | propriety be applied to describe the several phae |
nomena be examines, relative to the elevation and | nomena be examines, relative to the elevation and | ||
suspension of water in air, as well as to its precipi≠ | suspension of water in air, as well as to its precipi≠ | ||
Revision as of 15:46, 3 December 2017
[ 55 ] ber) 17 degrees less than it was in the months of August and September.
108. I hope this paradox will be explained, and that the principles which may clear it up will draw useful consequences along with them. Those phi- losphers who look upon evaporation as a dissolution of water by air in the manner of menstrua, that is, by affinity, will easily apply their principle to the solution of part of these phaenomena The disso- lution is greater when the menstruum is warmer, and consequently the air must keep a greater quantity of water in dissolution, and suffere a less part of it to beprecipitated, in fummcr than in winter. I can- not but allow that this system is extremely specious, and that many phznomena are very happily ex- plained by means of it. This is what Mr le Roy has shewn us in the memoir I have already quoted ; in which, without contending that ai r really acts as a menstruum with respect to water, he demonstrates, by a parallel very well kept up, that all the chemi- cal expressions concerning dissolutions may with propriety be applied to describe the several phae nomena be examines, relative to the elevation and suspension of water in air, as well as to its precipi≠ tation under different forms 109. If it was not too common a practice, to conclude things from words, 1 should in fact think these chemical expressions very conveniently adapted to explain a number of these phaenomena. But I have rejected them here, on account of this consi≠ deration; that when I took in a greater number of phaenomena, I found them no longer accurate, any more than the general idea of the dissolu≠ tion
