A treatise on meteorological instruments: explanatory of their scientific principles, method of construction, and practical utility (Google eBook)

Front Cover
Negretti & Zambra, 1864 - Meteorological instruments - 150 pages
0 Reviews
  

What people are saying - Write a review

We haven't found any reviews in the usual places.

Contents

Pediment Barometers 12 The Words on the Scale 13 Correction due to Capacity of Cistern
11
Public Barometers 15 Fishery or SeaCoast Barometers
12
Admiral FitzBoys Words for the Scale
16
Instructions for Seacoast Barometer
17
French Seacoast Barometer
18
Common Marine Barometer
19
The Kew Marine Barometer
20
Method of verifying Barometers
21
FitzBoys Marine Barometer
22
Words for its Scale
23
Trials of this Barometer under Gunfire
24
Neoretti and Zambras Farmers Barometer and Domestic WeatherGlass
25
Bules for Foretelling the Weather
26
Causes which may bring about a Fall or a Bise in the Barometer 28 Use of the Barometer in the Management of Mines 29 Use of the Barometer in esti...
27
Syphon Tube Barometers 30 Principle of 31 Dial or Wheel Barometers
28
Standard Syphon Barometer
30
Milnes SelfRegistering Barometer 34 Modification of Milnes Barometer 35 Kinos SelfRegistering Barometer
32
Syphon with Photographic Registration
36
CHAPTER IV
37
Fortins Mountain Barometer 39 Newmans Mountain Barometer
38
Negretti and Zambras Patent Mountain and other Barometers
40
Short Tube Barometer
41
Method of Calculating Heights by the Barometer Tables and Examples
42
CHAPTER V
47
The Waterglass Barometer
49
Sympiesometers
50
Aneroids
51
Small Size Aneroids
54
Watch Aneroid
55
Measurement of Heights by the Aneroid Example
56
Metallic Barometer
57
CHAPTER VI
58
Standard Thermometer 57 Method of ascertaining the exact Boiling Temperature Tables 58 Displacement of the Freezing Point 59 The Scale
59
Tables for Determining the Temperature of the Vapour of Boiling Water
62
Thermometers of Extreme Sensitiveness
63
Varieties of Thermometers
64
The method of testing Thermometers 61 Porcelain ScalePlates
65
Enamelled Tubes
66
Earth Thermometer
67
Marine Thermometer
68
Importance
69
Rutherfords Maximum Thermometer
73
Phillipss ditto ditto 72 Negretti and Zambras Patent Maximum Thermometer
74
Rutherfords Alcohol Minimum Thermometer
76
Horticultural Minimum Thermometer 75 Baudins Alcohol Minimum Thermometer
77
Johnsons Metallic Thermometer
91
CHAPTER X
94
Hypsometric Apparatus
95
Precautions to ensure Correct Graduation
96
Method of Calculating Heights from Observations with the Mountain Thermometer Example
97
CHAPTER XI
101
Leslies Hygrometer
102
Daniels Hygrometer
103
Eegnaults Condenser Hygrometer
104
Temperature of Evaporation 106 Masons Hygrometer
105
Selfregistering Hygrometer 108 Causes of
108
Plan of Exposing Thermometers CHAPTER XII
109
Instruments used for Measuring the Rainfall 110 Howards RatnGauge 111 Glaibhers RainGauge
110
RainGauge with Float 113 RainGauge with Side Tube
111
EitzRoys RatnGauge 115 SelfRegistering RainGauge 116 The principle of Measurement
112
Position for Raingauge
113
Table of Average British Rainfall in Westerly Central and Easterly districts
114
Utility of Statistics of Rainfall
115
Apparatus employed fob Registebing the Direction Pressure and Velocity of the Wind 122 The Vane
117
Linds WindGauge 124 Harriss WindGauge
118
Robinsons Anemometer
119
Whewells Anemometer
121
Osleks Anemometer and Pluviometer
122
Beckleys Anemometer
124
Atmospherio Electroscope 132 Voltas Electrometer 133 Peltiers Electeometer 134 Bohnenbergers Electroscope
128
Thomsons Electeometer
130
Fundamental Facts
131
Lightning Conductors 138 Precautions against Lightning
132
CHAPTER XV
134
Clarks Ozone Cage 143 Distribution and Effects of Ozone
135
CHAPTER XVI
136
Tables for Correcting Observations made with
142
Leslies Differential Thermometer
146
Romfords Differential Thermometer
147
Glaishers Thermometer Stand
148
Thermometer Screen for use at
149
Anemoscope
150
evaporating dlsh or gauge
151
Admidometer
152
Cloud Reflector
153
Sunshine Recoeder
154
Set of Portable Instruments
155
Implements
156
Hydrometer
157
Newmans SelfRegistering TideGauge
158

Common terms and phrases

Popular passages

Page 84 - The refrigeration at night is extreme when the air is dry. The removal, for a single summer night, of the aqueous vapour from the atmosphere which covers England, would be attended by the destruction of every plant which a freezing temperature could kill. In Sahara, where 'the soil is fire and the wind is flame,' the cold at night is often painful to bear.
Page 11 - ... and then fall, it presages a change, though not to so great a degree as if it had stood lower : besides which, the direction, and force of wind, are not in any way noticed. It is not from the point at which the mercury may stand that we are alone to form a judgment of the state of the weather, but from its rising or falling ; and from the movements of immediately preceding days as well as hours, keeping in mind effects of change of direction, and dryness, or moisture, as well as alteration of...
Page 19 - ... much lower than the lowest pressure to which marine barometers are likely to be exposed ; and by compressing the air it can be made to read higher than the mercury ever stands at the level of the sea. The tube of the standard is contracted...
Page 26 - A rapid rise Indicates unsettled weather. A gradual rise indicates settled weather. A rise with dry air and cold increasing- in summer indicates wind from the northward; and if rain has fallen, better weather may be expected. A rise with moist air and a low temperature indicates wind and rain from the northward.
Page 85 - Shallow pits are dug, which are partially filled with straw, and on the straw flat pans containing water are exposed to the clear firmament. The water is a powerful radiant, and sends off its heat copiously into space. The heat thus lost cannot be supplied from the earth this source being cut off by the non-conducting straw. Before sunrise a cake of ice is formed in each vessel.
Page 105 - ... passes into a vessel of water, placed at such a distance as to allow a length of conducting thread of about three inches. The cup or glass is placed on one side and a little beneath, so that the water within may not affect the reading of the dry butt) thermometer.
Page 53 - ... deteriorate in time, though slowly." " The aneroid is quick in showing the variation of atmospheric pressure ; and to the navigator who knows the difficulty, at times, of using barometers, this instrument is a great boon, for it can be placed anywhere, quite out of harm's way, and is not affected by the ship's motion, although faithfully giving indication of increased or diminished pressure of air.
Page 88 - Into the cylinder this thermometer d, is introduced, the stem of which is protected by a piece of brass tubing. We thus obtain the temperature of the mercury. The flat end of the cylinder is to be turned towards the sun, and the surface thus presented is coated with lampblack.
Page 19 - The divisions on this scale correspond exactly with those on the tube of the standard barometer. A vernier and telescope are made to slide on the scale by means of a rack and pinion. The telescope has two horizontal wires, one fixed and the other moveable by a micrometer screw, so that the difference between the height of the column of mercury and the nearest division on the scale of the standard, and also of all the other barometers placed by the side of it for comparison, can be measured either...
Page 81 - The result of this is that on the thermometer being set, the contracting force of the mercury in cooling withdraws the fluid in the indicating stem only, whilst on its expanding with heat the long column does not move, the increased bulk of mercury finding an easier passage through the larger bore into the small pear-shaped chamber attached.

Bibliographic information