The Works of Benjamin Franklin: Containing Several Political and Historical Tracts Not Included in Any Former Edition, and Many Letters, Official and Private, Not Hitherto Published, Band 6Benjamin Franklin Stevens, 1882 |
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Seite 36
... vessel of water , and remove it from the fire ; then , as the air within cools and contracts , you will see the water rise in the neck of the bottle , supplying the place of just so much air as was driven out . Hold a large hot coal ...
... vessel of water , and remove it from the fire ; then , as the air within cools and contracts , you will see the water rise in the neck of the bottle , supplying the place of just so much air as was driven out . Hold a large hot coal ...
Seite 37
... vessel of water will rise till it comes to the top ; so rarefied air will rise in common air , till it either comes to air of equal weight , or is by cold reduced to its for- mer density . A fire , then , being made in any chimney , the ...
... vessel of water will rise till it comes to the top ; so rarefied air will rise in common air , till it either comes to air of equal weight , or is by cold reduced to its for- mer density . A fire , then , being made in any chimney , the ...
Seite 66
... vessels , where it joins with a vein or artery , with or against the stream of blood in the larger vessel , would be sufficient to produce such contrary effects as perspiring and absorb- ing . If it would , both perspirants and ...
... vessels , where it joins with a vein or artery , with or against the stream of blood in the larger vessel , would be sufficient to produce such contrary effects as perspiring and absorb- ing . If it would , both perspirants and ...
Seite 75
... vessel lying still in a calm at our Cape could be taken up , and the same instant set down in an equal calm in the English Channel ; would not the difference of veloci- ty between her and the sea she was placed in appear plainly by a ...
... vessel lying still in a calm at our Cape could be taken up , and the same instant set down in an equal calm in the English Channel ; would not the difference of veloci- ty between her and the sea she was placed in appear plainly by a ...
Seite 99
... vessel of hot water , if the vapor can freely pass from it , soon cools . If there be just fire enough un- der it to add continually the heat it loses , it retains the same degree . If the vessel be closed , so that the va- por may be ...
... vessel of hot water , if the vapor can freely pass from it , soon cools . If there be just fire enough un- der it to add continually the heat it loses , it retains the same degree . If the vessel be closed , so that the va- por may be ...
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American Philosophical Society appears ascending body bottom CADWALLADER COLDEN cause chimney cloud coals cold air common conductor continually cool DEAR SIR degree descending diameter distance earth EDITOR effect electricity England equal experiment fire fire-place flame fluid force FRANKLIN funnel give glass Gulf Stream heat houses hygrometer inches ingenious iron JARED ELIOT JOSEPH PRIESTLEY kind less letter light London magic squares matter mentioned method moisture motion move observed occasion paper particles pass passage perhaps perspirable Philadelphia Philosophical piece plate pleasure present printed quantity rarefied received rise river round Royal Society salt ship side Sir John Pringle smoke specific gravity spout stove suppose surface thing tion Transit of Mercury transit of Venus upper vapor vessel ward air waves weight whirl whirlwind whole wind wood
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Seite 228 - I am very sorry, that you intend soon to leave our hemisphere. America has sent us many good things, gold, silver, sugar, tobacco, indigo, &c. ; but you are the first philosopher, and indeed the first great man of letters, for whom we are beholden to her.
Seite 23 - That, as we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously.
Seite 435 - Convincing sovereigns of the folly of wars may perhaps be one effect of it, since it will be impracticable for the most potent of them to guard his dominions. Five thousand balloons, capable of raising two men each, could not cost more than five ships of the line; and where is the prince who can afford so to cover his country with troops for its defence, as that ten thousand men descending from the clouds might not in many places do an infinite deal of mischief, before a force could be brought together...
Seite 426 - Such changes in the superficial parts of the globe seemed to me unlikely to happen, if the earth were solid at the centre. I therefore imagined that the internal parts might be a fluid more dense, and of greater specific gravity than any of the solids we are acquainted with ; which therefore might swim in or upon that fluid. Thus the surface of the globe would be a shell, capable of being broken and disordered by the violent movements of the fluid on which it rested.
Seite 396 - That the vegetable creation should restore the air which is spoiled by the animal part of it, looks like a rational system, and seems to be of a piece with the rest.
Seite 16 - ... all philosophical experiments that let light into the nature of things, tend to increase the power of man over matter and multiply the conveniences or pleasures of hie.
Seite 343 - ... were, by the smoothness of the water over them, which might possibly be occasioned, he thought, by some oiliness proceeding from their bodies. A gentleman from Rhode Island told me, it had been remarked, that the harbor of Newport was ever smooth while any whaling vessels were in it : which probably arose from hence, that the blubber which they sometimes bring loose in the hold, or the leakage of their barrels, might afford some oil, to mix with that water, which from time to time they pump out...
Seite 365 - I wish it were possible, from this instance, to invent a method of embalming drowned persons in such a manner that they may be recalled to life at any period, however distant; for having a very ardent desire to see and observe the state of America a hundred years hence, I should prefer to any ordinary death the being immersed in a cask of Madeira wine with a few friends till 1 that time, to be then recalled to life by the solar warmth of my dear country!
Seite 550 - ... with their food by slovenly workmen, who went to their meals after handling the metal, without well washing their fingers, so that some of the metalline particles were taken off by their bread and eaten with it.
Seite 236 - The fingers should be first a little soaked in water, and quite free from all greasiness ; a little fine chalk upon them is sometimes useful, to make them catch the glass and bring out the tone more readily.