The Electrical Researches of the Honourable Henry Cavendish, F.R.S., Written Between 1771 and 1781

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Cambridge University Press, 1879 - 454 pages

From inside the book

Contents

3 COMPARISON OF THE CHARGES OF COATED PLATES
3
Repulsion of a cone on a particle at the vertex 711
7
Force between two bodies over or under charged 1315
13
Dec
18
Equilibrium of electricity in a globe 2027
20
Two plane parallel plates 2838
28
Canals of incompressible fluid 3953
39
Charge of a condenser little affected by the presence of an over
52
Pressure of electric fluid against a surface
54
Charges of similar bodies as then 1 power of their corresponding diame
67
Charge of a thin flat plate independent of its thickness
73
Equilibrium of electricity in bodies communicating by a canal is
84
Cor 176
85
Whether the conditions of equilibrium are the same for two bodies com
94
PAGE OF MS ARTICLES
95
FIG PAGE
104
2 Attraction and repulsion 106117
106
Trial Plate
116
3 On the cases in which bodies receive electricity from or part with
118
New apparatus for the comparison of capacities Fig 20 295
120
Observations
123
Insulators of waxed glass
124
5 Cantons and Franklins experiments
127
Allowance for connecting wire 647
137
Fig 1 If the fluid uniformly spread on a circular plate
140
List of plates of glass 592
144
Machine for trying Leyden vials
145
Repulsion of two columns
146
The trial plate 297
147
Prop xxx11 Fig 4 Charge of two equal cylinders at a finite distance
152
Ten plates from Nairne 593
157
Fig 7 Concave plate compared with flat one
158
Slit coatings
159
Density increasing towards the circumference
164
On the Leyden vial
168
Prop xxxvı Fig 10 Penetration of glass by fluid
170
Effect of heat on glass To face p
180
Cor 2
181
Lemma Potential of two equal particles compared with that of their
187
Effect of floor and walls of the room
193
Condition of electric equilibrium between conductors in electric com
199
Electrification by induction
205
Effect of an overcharged body
209
The electricity of glass is here taken to be positive
217
443
218
The charging jar
223
Trial plate Double plate A Double plate B Large circle 18 5?
224
Advantages of the second method
229
Second experimentA piece of wood within a vessel formed of
235
comparison with Art 455
237
Increase of charge by induction 652
240
Method of operation Fig 14
241
E+F+G with I K L M
243
Disturbing cause
287
Comparison of Lanes electrometer with light straw electro
291
MEASURES
298
Advantage of the second method
299
These methods abandoned
305
Recapitulation of the theory of coated plates
311
First leather Torpedo 599
312
Comparison of D + E + F when close together and when six inches apart
317
Experiments without any Torpedo 613
319
Comparison of charges of jars and battery method of repeated communi
321
Spreading007 on thick plates and 0 09 on thin plates
323
Comparison of water purged of air and plain water 624
326
Spreading not uniform throughout its extent
328
Fixed air in water
331
Charge of glass plates is many times greater than it ought to be by
332
To find what power of the velocity the resistance is proportional to 629
336
Hypothesis about the relative effect of surrounding bodies on the capa
338
Results 646
343
Experiment to determine whether the air between the plates is charged
344
Double plates A and B and plate air 397 95
347
H 658
349
First hypothesis Electricity penetrates into the glass to a certain depth
350
Table of glass plates 673
355
Comparison of the plate D with the circle of 36 inches diameter with
356
NOTES BY THE EDITOR
359
Comparison of the results
362
Table of results at different temperatures
368
Table of the charges of plates of other substances
371
Canals of incompressible fluid
375
Difference between thick plates and thin ones
377
Zero of potential
382
Table of results with cylindric vials
383
Fifth hypothesis on the communication of electricity between conductor
384
The Leyden jars
389
Walshs experiments on the Torpedo 395
395
Two cylinders
400
Conditions requisite for a spark and for attraction and repulsion 401408
401
Theory of this method 582
403
The two flat conductors between which the plate of air lies or in modern
404
Artificial Torpedo
409
Experiment of the globe and hemispheres
411
Shocks in air and under salt water Law of divided currents 415420
415
The testing electrometer 244
418
Torpedo in a basket in sand shock through wet shoes and through net 421424
421
Capacity of a disk of sensible thickness
423
Capacity as affected by walls of room
429
Structure of the electric organ
434
Excess of redundant fluid on positive side above deficient fluid
437
Pump water rain water salt in 1000 sea water 684
443
Sea salt
446
Real power of plate air computed x 243 computed is 8 times too great
449
List of thickness and coatings of some plates see p 27
12

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