The Complete Works in Philosophy, Politics and Morals of the late Dr. Benjamin Franklin, Vol. 1 [of 3]

By Benjamin Franklin

Page 228

wire, the whole quantity of
electric fluid contained in the wire is, probably, put in motion at
once.

For at the instant the hook, connected with the inside of the bottle,
_gives out_; the coating, or outside of the bottle, _draws in_ a
portion of that fluid.

If such long wire contains precisely the quantity that the outside
of the bottle demands, the whole will move out of the wire to the
outside of the bottle, and the over quantity which the inside of the
bottle contained, being exactly equal, will flow into the wire, and
remain there, in the place of the quantity the wire had just parted
with to the outside of the bottle.

But if the wire be so long as that one-tenth (suppose) of its natural
quantity is sufficient to supply what the outside of the bottle
demands, in such case the outside will only receive what is contained
in one-tenth of the wire's length, from the end next to it; though
the whole will move so as to make room at the other end for an equal
quantity issuing, at the same time, from the inside of the bottle.

So that this experiment only shews the extreme facility with which
the electric fluid moves in metal; it can never determine the
velocity.

And, therefore, the proposed experiment (though well imagined, and
very ingenious) of sending the spark round through a vast length of
space, by the waters of Susquehannah, or Potowmack, and Ohio, would
not afford the satisfaction desired, though we could be sure that the
motion of the electric fluid would be in that tract, and not under
ground in the wet earth by the shortest way.

B. FRANKLIN.

FOOTNOTE:

[75] James Alexander. _Editor._




FROM MR. KINNERSLEY TO B. FRANKLIN, ESQ.

_Experiments on boiling Water, and Glass heated by boiling
Water.--Doctrine of Repulsion in electrised Bodies
doubted.--Electricity of the Atmosphere at different
Heights.--Electrical Horse-race.--Electrical Thermometer.--In
what Cases the electrical Fire produces Heat.--Wire lengthened by
Electricity.--Good Effect of a Rod on the House of Mr. West, of
Philadelphia._


_Philadelphia, March 12, 1761._

SIR,

Having lately made the following experiments, I very chearfully
communicate them, in hopes of giving you some degree of pleasure,
and exciting you to further explore your favorite, but not quite
exhausted subject, _electricity_.

I placed myself on an electric stand, and, being well electrised,
threw my hat to an unelectrised person, at a considerable distance,
on another stand, and found that the hat carried some of the
electricity with it; for, upon going immediately to the person who
received

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Text Comparison with Benjamin Franklin and the First Balloons

Page 0
, in December, 1905, and previously had belonged to G.
Page 1
Montgolfier, of Annonay, was repeated by M.
Page 2
There was some Wind, but not very strong.
Page 3
A Philosopher here, M.
Page 4
It has been even fancied that in time People will keep such Globes anchored in the Air, to which by Pullies they may draw up Game to be preserved in the Cool & Water to be frozen when Ice is wanted.
Page 5
It is to carry up a Man.
Page 6
but there was at the same time a good deal of Anxiety for their Safety.
Page 7
A very handsome triumphal Car will be suspended to it, in which Mess^rs.
Page 8
Thus the great Bulk of one of these Machines, with the short duration of its Power, & the great Expence of filling the other will prevent the Inventions being of so much Use, as some may expect, till Chemistry can invent a cheaper light Air producible with more Expedition.
Page 9
Faujas's Book upon the Balloons, which I hope you have receiv'd.
Page 10
Between One & Two aClock, all Eyes were gratified with seeing it rise majestically from among the Trees, and ascend gradually above the Buildings, a most beautiful Spectacle! When it was about 200 feet high, the brave Adventurers held out and wav'd a little white Pennant, on both Sides their Car, to salute the Spectators, who return'd loud Claps of Applause.
Page 11
Les Voyageurs ont assure n'avoir eprouve que des Sensations agreables dans leur traversee.
Page 12
_ The hand-writing is in a more flowing style than the subsequent letters.
Page 13
28th and first printed in the _Journal de Paris_ but was republished by Faujas de Saint-Fond in his second volume.
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16, "Bart.