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<head>1821. July 30 M<lb/> | |||
Posology</head> | |||
<note>81<lb/> | |||
Proportions — mode of ascertaining</note> | |||
<p>5</p> | |||
<note>16</note> | |||
<p>By the observation of the different phenomena in<lb/> | |||
respect of attraction and repulsion as between <del><gap/></del> <add>capillary</add><lb/> | |||
hollow tubes of glass and different sorts of liquids, one might<lb/> | |||
be led to infer — <del><gap/></del> <add>a</add> termination might, in some point or other,<lb/> | |||
be produced in the scale by that circumstance: that, at a<lb/> | |||
certain minuteness, the attraction between the particles of the<lb/> | |||
tube, and the particles of the liquid, would be too strong to be<lb/> | |||
overcome by any muscular force. But this idea is presently<lb/> | |||
repelled by the consideration of the superior force possessed<lb/> | |||
by the limbs of a flea for example, in comparison with ours.<lb/> | |||
If our legs, compared with the bulk of our bodies, had the same<lb/> | |||
force as the legs of the flea, compared with the bulk of his<lb/> | |||
body, what is the greatest height to which we should be able<lb/> | |||
to leap? The height of the tallest of our trees would form but<lb/> | |||
a part of it.</p> | |||
<note>17.<lb/> | |||
By magnification<lb/> | |||
we see bodies larger<lb/> | |||
and smaller than<lb/> | |||
any we perceived<lb/> | |||
before.</note> | |||
<p>Note, that it is by magnification that we come to<lb/> | |||
perceive bodies larger than any we perceived before, as well<lb/> | |||
as bodies smaller than any we perceived before.</p> | |||
1821. July 30 M
Posology
81
Proportions — mode of ascertaining
5
16
By the observation of the different phenomena in
respect of attraction and repulsion as between capillary
hollow tubes of glass and different sorts of liquids, one might
be led to infer — a termination might, in some point or other,
be produced in the scale by that circumstance: that, at a
certain minuteness, the attraction between the particles of the
tube, and the particles of the liquid, would be too strong to be
overcome by any muscular force. But this idea is presently
repelled by the consideration of the superior force possessed
by the limbs of a flea for example, in comparison with ours.
If our legs, compared with the bulk of our bodies, had the same
force as the legs of the flea, compared with the bulk of his
body, what is the greatest height to which we should be able
to leap? The height of the tallest of our trees would form but
a part of it.
17.
By magnification
we see bodies larger
and smaller than
any we perceived
before.
Note, that it is by magnification that we come to
perceive bodies larger than any we perceived before, as well
as bodies smaller than any we perceived before.
|
Identifier: | JB/135/268/001"JB/" can not be assigned to a declared number type with value 135. |
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1821-07-30 |
16-17 |
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135 |
posology |
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268 |
posology |
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001 |
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copy/fair copy sheet |
1 |
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recto |
e5 / g81 |
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john flowerdew colls |
c wilmott 1819 |
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andreas louriottis |
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1819 |
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46386 |
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