Daniel&rsquos Hygrometer
<div>Fig. 77.<br> <img src="/images/fig77.jpg" alt=""></div> <p>This instrument was invented about the year 1820, by Professor Daniel, the distinguished author of <em>Meteorological Essays</em>; and it entirely superseded all hygrometers depending ... Description Of The Thermometer
The ordinary thermometer consists of a glass tube of very fine bore, having a bulb of thin glass at one extremity, and closed at the other. The bulb and part of the tube contains mercury; the rest of the tube is a vacuum, and affords space for the ... Desirability Of Magnifying The Barometer Range
The limits within which the ordinary barometric column oscillates, do not exceed four inches for extreme range, while the ordinary range is confined to about two inches; hence it has often been felt that the public utility of the instrument would b... Dial Or Wheel Barometers
<p>The familiar household “Weather Glasses” are barometers on the syphon principle. The portions of the two limbs through which the mercury will rise and fall with the varying pressure of the atmosphere are made of precisely the same diame... Distribution And Effects Of Ozone
Mr. Glaisher has found that “the amount of ozone at stations of low elevation is small; at stations of high elevation, it is almost always present; and at other and intermediate stations, it is generally so. The presence and amount of ozone wo... Earth Thermometer
<p>The Earth Thermometer is for ascertaining the temperature of the soil at various depths. It is protected by a brass frame, pointed and strengthened at the end to facilitate insertion into the ground, as in fig. 51.</p> <div>Fig. 51.<br> <img src... Ebullition
The temperature at which a fluid <em>boils</em> is called the <em>boiling-point</em> of that particular fluid. It is different for different liquids; and, moreover, in the same liquid it varies with certain changes of circumstance. Thus the same liqu... Fishery Or Sea-coast Barometers
<div>Fig. 12.<br> <img src="/images/fig12.jpg" alt=""></div> <p><br> Fig. 12 gives a representation of these coast and fishery barometers. The frame is of solid oak, firmly screwed together. The scales are very legibly engraved on porcelain by Ne... Fortin&rsquos Barometer
Fortin’s plan of constructing a barometer cistern is shown in fig. 2. The cistern is formed of a glass cylinder, which allows of the level of the mercury within being seen. The bottom of the cylinder is made of sheep-skin or leather, like a ba... French Sea-coast Barometer
The French have imitated this form of barometer for coast service, and have translated Admiral FitzRoy’s indications for the scale as follows:—</p> <table summary="table" border="0" cellpadding="0" cellspacing="5"> <tbody> <tr> ... Fundamental Facts Regarding Atmospheric Electricity
The <em>general</em> electrical condition of the atmosphere is <em>positive</em> in relation to the surface of the earth and ocean, becoming more and more positive as the altitude increases. When the sky is overcast, and the clouds are moving in dif... Horticultural Minimum Thermometer
This instrument, represented in fig. 56, is a special construction of Rutherford’s minimum thermometer to meet the requirements of horticulturists. It is desirable, if not essential, that gardeners should have the means of ascertaining to what... Howard&rsquos Rain-gauge
It consists of a copper funnel, a stout glass or stone bottle, and a measuring glass. The bottle is to be placed upon the ground, with the funnel resting on its neck. A brass band or cylinder fixed upon the outer surface of the funnel envelops the n... Howson&rsquos Long Range Barometer
<div>Fig. 31.<br> <img src="/images/fig31.jpg" alt=""></div> <p><br> Very recently quite a novel design has been patented by Mr. Howson, for a long range barometer. The construction requires neither distortion of the tube, nor mechanism for conver... Hydrometer
<div>Fig. 96.<br> <img src="/images/fig96.jpg" alt=""></div> <div>Fig. 97.<br> <img src="/images/fig97.jpg" alt=""></div> <p><br> <p>A simple kind of hydrometer is very much used at sea, as “a sea-water test;” and as the observati...
• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• »

2 Construction Of Barometers Admiral Fitzroy&rsquos Scale Words Admiral Fitzroy&rsquos Words For The Scale Aneroids Admiral Fitzroy&rsquos Rain-gauge Vacuum Solar Radiation Thermometer Fortin&rsquos Barometer Chemical Weather Glass

Mountain Thermometer Sometimes Called Hypsometric Apparatus Thermometer Screen For Use At Sea Use Of The Barometer In Estimating The Height Of Tides Measurement Of Heights By The Aneroid King&rsquos Self-registering Barometer Pouillet&rsquos Pyrheliometer Self-compensating Standard Barometer Method Of Calculating Heights By The Barometer