Handbook of Natural Philosophy: Hydrostatics, pneumatics, and heat

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Walton & Maberly, 1865
 

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Inhalt

Expedient adopted in steamers 52 of lamps
68
Methods of determining the spe M
74
Sect Page 118 Savarts experiments
83
Effect of ajoutage
84
Motion of liquids in pipes and channels 131 Velocity 8
85
Resistance to the motion
86
Effect of elbows
87
Effect of throttling ib 136 Ornamental waterworks
88
The ball cock or selfacting feeder
89
Pronys float
90
Clepsydra or waterclock
91
Artesian wells
93
I41 º of water supplied by the well of Grenelle 142 Absorbing well ? 143 Well of St Denis
95
Velocity of a stream at different depths
96
Woltmanns stream gauge ib To ascertain the mean velocity o a stream
98
Velocity of rivers 148 Resistance of liquids moving through them
99
A flat surface encounters a resist ance which is as the square of the velocity IOO 150 Absolute resistance
100
Force upon a surface at rest IOI 151 Resistance when oblique b 153 Form of least resistance ib 154 Naval architecture
101
Form of fishes IO2 156 Instances of design in creation Form of animals intended to move through fluids ib 157 Use of the rudder
102
Propulsion of vessels by paddle wheels il
103
machines for raising water Ioſ 161 Method of estimating the useful effect ib 161 Power lost upon the machinery
107
Examples ib zio Air compressible 156
108
By lever
109
By fixed pulley 11o 168 By horse shaft
110
ifting pump
112
Valves II
114
Clock valves ib 173 Conical valves
115
valves ib 175 ain pump ib Noria p
116
Dredging machines
117
The Dutch screw I2O 186 Paddle wheel
120
The lifting wheel 12 1
121
The tympan
122
Mechanism to raise oil in lamps
124
Primitive form of lamp ºb 185 Carcel lamp 12
125
Moderator lamp
126
Water applied as a moving power
129
Expedients by which this object is attained
130
Divided into two classes
131

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Seite 72 - It is better, on this account, in graduating the bottle, to make two scratches as represented in the drawing, one at the top and the other at the bottom of the curve : this prevents any future mistake.
Seite 176 - Whatever change of weather suddenly follows a change in the barometer, may be expected to last but a short time. Thus, if fair weather follow immediately the rise of the mercury, there will be very little of it; and, in the same way, if foul weather follow the fall of the mercury, it will last but a short time.
Seite 302 - An alloy composed of 8 parts of bismuth, 5 of lead, and 3 of tin, liquefies at a temperature below that of boiling water; and an alloy composed of 496 bismuth, 310 lead, 177 tin, and 26 mercury, fuses at 162°-5.
Seite 176 - ... 4. If fair weather continue for several days, during which the mercury continually falls, a long succession of foul weather will probably ensue ; and again, if foul weather continue for several days, while the mercury continually rises, a long succession of fair weather will probably succeed. 5. A fluctuating and unsettled state in the mercurial column indicates changeable weather.
Seite 54 - If this loss of weight be subtracted from the loss sustained by the combined solids, the remainder will be the weight of as much water as is equal in bulk to the lighter solid.

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