Before and after the flight the meteorograph is hung upon a tripod in the free air, in order that its thermometer and hygrometer may be compared with the standards.
The barometer and thermometer were observed every few minutes, and the hygrometer occasionally.
The next oldest is the hygrometer, or instrument for measuring moisture in the air, the form which acts by absorption dating from the middle of the fifteenth century, and the condensation hygrometer being a century younger.
Fahrenheit; in the middle section is the trace of the hygrometer on a scale of relative humidity in percentages, and in the upper section is the trace of the thermometer on a scale of temperatures in Fahrenheit and Centigrade degrees.
The fuse of the hygrometer may possibly establish the truth or falsity of this supposition.
Boussingault occasionally observed at Quito that Saussure's hygrometer receded to 26 degrees with a temperature of from 53.
Daniell's hygrometer, a form of hygrometer consisting of a bent glass tube terminating in two bulbs, the one covered with muslin, the other of black glass, and containing ether and a thermometer.
Physics) Defn: A form of hygrometer having wet and dry bulb thermometers, with an adjustable index showing directly the percentage of moisture in the air, etc.
Might not this machine be applied as anHygrometer to some meteorological purpose?
Leonardo da Vinci left a sketch of both a wind pressure meter and a hygrometer (Codex Atlanticus, 249 va and 8 vb).
The dryness of the air is such that the hygrometer of Deluc keeps day and night between 36 and 40 degrees.
At other times, these same stars, considerably elevated above the horizon, emitted a steady and planetary light, the hygrometer being at 90 or 93 degrees.
During these variations of the zodiacal light, the hygrometer indicated considerable dryness.
It was curious that the vapour did not affect the hygrometer at the surface of the earth.
The 12th of November was an extremely hot day, and the hygrometer indicated a very considerable degree of dryness for those climates.
I have often seen at Cumana a great scintillation of the stars of Orion and Sagittarius, when Saussure's hygrometer was at 85 degrees.
About five o'clock the rain entirely ceased, the sun reappeared a little before it set, and the hygrometer moved towards the point of dryness; but at eight or nine we were again enveloped in a thick stratum of vapour.
The hygrometerof Deluc continued to indicate great dryness (from 33 to 35 degrees), and yet the atmosphere appeared no longer the same.
The hygrometer of Deluc was at 53 degrees, the centigrade thermometer 23.
On the vertical line for 70° find the intersection with the hygrometer (convex) curve for 8°.
The Recording Hygrometer In Figure 95 is shown the Recording Hygrometer complete with wet and dry bulbs, two connecting tubes and two recording pens and special moistening device for supplying water to the wet bulb.
Therefore, the hygrometer (convex) curves are ordinarily more useful in determining relative humidities.
To correct readings of the hygrometer for changes in barometric pressure: A change of pressure affects the reading of the wet bulb.
The Registering Hygrometer In Figure 96 is shown the Registering Hygrometer, which consists of two especially constructed thermometers.
To find the relative humidity by use of wet-and-dry-bulb hygrometer or psychrometer: Place the instrument in a strong circulation of air, or wave it to and fro.
No record was made of the humidity of the atmosphere, as the Hygrometer provided for the use of the Expedition, proved entirely useless.
In ascertaining the humidity of the atmosphere a hygrometer would have been particularly useful, but it has never been in my power to procure one that had any claim to being accurate.
The hair hygrometer depends for its action upon the fact that a hair, freed from oil, not only absorbs moisture from the atmosphere, but elongates when damp and contracts when dry.
This and other types of hygrometer can be arranged to record their own readings continuously, constituting a hygrograph.
The form ofhygrometer most commonly met with at meteorological stations is called a psychrometer.
A siphon barometer, dry and wet bulb thermometers, aspirated and free, and a Regnault hygrometer were taken up.
This is always liable to occur at some time, on days on which the hygrometer shows us that there is over ninety per cent of moisture in the air.
Thus the hygrometer is worthy to be studied on a hunting morning.
That the relative humidity of the air is not the all-important factor was often proved by the bad scent experienced just before rain and storms, when the hygrometer showed a saturation of considerably over ninety per cent.
It so happened that for some years the present writer had also been amusing himself with experiments of the same nature, and at one time entertained the hope that by means of the hygrometer he would arrive at a solution of the mystery.
The hygrometer in most general use is the wet and dry bulb thermometer, and for which Mr. Glaisher has calculated an elaborate set of tables, a brief abstract of which sufficient for general purposes is subjoined.
In Saussaure’s Hygrometer the frame is of brass, and the scale of the same metal silvered.
This superiority, however, is attainable by a very moderate share of application to the subject, and by the keeping of a plain diary of the barometer and rain gauge, with the hygrometer and vane under his daily notice.
Jean André de Luc, for example, has a double claim upon our attention as the inventor of the hygrometer and as the pioneer of the snow-peaks.
Should the water become frozen on the ball, this hygrometer will still act; for evaporation goes on from the surface of ice in proportion to the dryness of the air.
The Dry and Wet Bulb Hygrometer, or Psychrometer=, known also as Mason's hygrometer (fig.
Even to the robust, much inconvenience may be prevented by a due respect to the indications of the hygrometer and the barometer, and the delicate in health will do well to regard its warnings.
A fall in the barometer is indicative of coming wind or rain: if the hygrometer shows increasing dampness by the difference of the readings becoming smaller,--rain may therefore be anticipated.
Mason's hygrometer is useful in regulating the moisture of the air of apartments; a difference in the thermometer readings of from 5 deg.
The hygrometer is placed at E, with the vase of water at F.
On the contrary, if the hygrometer shows continuing or increasing dryness, a stronger wind is probable, without rain.
The greatest degree of dryness ever noticed by Leslie was at Paris, in the month of September, when the hygrometer indicated 120 deg.
The hygrometer may be had separate from the barometer, if the combined instruments cannot be sufficiently exposed to the external air, this being essential for the successful use of the hygrometer.
The manner in which the Hygrometer acts is as follows: It is a pretty well-known fact that water or wine is often cooled by a wet cloth being tied round the bottle, and then being placed in a current of air.
Negretti and Zambra have arranged a Wet and Dry Bulb Hygrometer upon the same plan.
Regnault's condenser hygrometer consists of a tube made of silver, very thin, and perfectly polished; the tube is larger at one end than the other, the large part being 1.
With a heredity like that, is it right to punish the child for having a shattered nervous system?
I didn't tell you that I am organizing local interest in our behalf.
Weather Bureau pattern hygrometersuch as is used at the weather stations.
The dew-point may be found by a number of methods, usually described in works on physics but practical determinations are made with a hygrometer or psychrometer and a dew-point table.
A form of hygrometer in which relative humidity is found directly from a diagram.
Accurate determinations must be made by the use of the psychrometer; those made by the hygrometer are approximate.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "hygrometer" in a variety of sentences. We hope that you will now be able to make sentences using this word.
