It is only when the pressure upon it is equal to the normal pressure of the atmosphere at the sea level, as indicated by a barometric reading of 760 mm.
Since the pressure of the atmosphere at any point is indicated by the barometric reading, it is convenient in the solution of the problems to substitute the latter for the pressure measured in grams per square centimeter.
These changes involve barometric pressure, rainfall and temperature, which all recur to that indefinite and complex phenomenon--the variation in the amount of heat received by the earth.
He believes that all such storms are due to the mechanical interaction of at least two barometric depressions.
Consequently, in the case of turbines equipped with barometric or jet condensers, it is often thought sufficient to rely upon the measurement taken of the boiler feed, and the boiler's initial and final contents.
Similarly, with a barometric condenser as that illustrated in Fig.
Sidenote: Condensing Equipment] Each engine unit is supplied with its own condenser equipment, consisting of two barometriccondensing chambers, each attached as closely as possible to its respective low-pressure cylinder.
When the barometric pressure rises, the bulb is compressed; when the barometer falls, the bulb enlarges by virtue of the diminution in atmospheric pressure.
At that depth the temperature changes are less than one fifth of a degree during the year, yet the effect of barometric changes on the rate of the clock have proved to be serious.
The barometric observations made in the neighbouring steppes prove the small slope of the ground from the longitude of 69 degrees to the eastern coast of Guiana.
The second species of inequality can be recognised only by geodesical or barometric levellings, or by the course of rivers.
This consideration is the result of a barometric measurement, taken in the province of Jaen de Bracamoros, where the river Amazon issues from the Cordilleras.
With respect to the Llanos of America, I found by barometric heights observed at Calabozo, at the Villa del Pao, and at the mouth of the Meta, that their height is only forty or fifty toises above the level of the sea.
I climbed to the top of a tree to look along the mountain, and make certain that we were at the highest point; and having convinced myself of this, I proceeded with the barometric observations, which were concluded by 3 P.
Cailletet is an apparatus for measuring the height of the balloon by photography in order to verify Laplace's formula connecting the barometric pressure with the altitude.
Berson determined to execute a high ascension in England during the prevalence of a barometric maximum in summer, when the air column would be abnormally warmed and the upper isothermal surfaces elevated.
The lower section contains the trace of the barometer, the horizontal lines being the heights in metres and feet that correspond to the barometric pressure with a temperature of 32 deg.
There were also twobarometric tubes registering the lowest pressure, as well as thermometers and other scientific instruments.
The invention of instruments for measuring temperature and barometric pressure made possible the quantitative observations that have supplied the data for deducing the laws governing the atmosphere.
In temperate latitudes it often happens, with a high barometric pressure, in winter that the mountain stations enjoy a long period of still and relatively warm weather, as compared to that experienced in the valleys.
On the right is a scale of miles above the sea, and on the left is a scale of barometric pressures corresponding to the height.
May 3 Note on Barometric Compensation of the Phil.
Several years since, I prepared a barometer, by which the barometric fluctuations were enlarged, for the information of the public; its indications are exhibited on the wall, near to the entrance gate of the Observatory.
We are at present engaged in comparing the barometric measures with the directions of the wind.
And so, in winter, the chilling of the plateau leads to the development of a higher barometric pressure and, as the open water to the north persists, to higher winds.
As the air flowed northwards over Adelie Land to the sea, it would rise slowly in temperature owing to the increased barometric pressure consequent on the descending gradient of the plateau.
The uniform conditions experienced during steady high winds were not only expressed by the slight variation in the temperature, but often in a remarkably even barometric curve.
The highest barometric reading was recorded on September 3, 30.
It is the breathing-process of the earth as shown by the variations of barometric pressure.
Accordingly, barometricmeasurements became for him the sign of a breathing process carried out by the earth.
Measurements made regularly over long periods of time finally lead him to recognize in the barometric variations of atmospheric pressure the basic meteorological phenomenon.
To this end he compares measurements of atmospheric temperature and local density withbarometric measurements.
The highest winds are always where the steepest gradients are; that is, where the barometric pressure decreases or increases the fastest.
Therefore there has grown up a pretty large body of information as each storm has had to be watched and the barometric movements recorded.
The curves given on the next page, which show the course of barometric pressure for a week, from Monday to Monday, are interesting.
Besides the astronomical observations, the barometric pressure, temperature, force and direction of the wind, and amount of cloud were noted three times daily; every evening a hypsometer reading was taken.
In treating of the atmosphere, meteorologists base their studies largely on changes in the weight of that medium, which they determine by barometric observations.
This is proved to us by the weight which the air imposes upon the mercury at the open end of a barometric tube.
It was probably during the night of the 12th that the lowest barometric pressure and the steepest gradients occurred.
This it is admitted is not the case, as the barometric pressure shows a marked decline in the earlier part of a cyclone the more rapidly the central line is approached, just as it rises again once that line has been passed.
As that point is receded from, the motion becomes more or less elliptical, as is attested by the barometric differences, which had the cyclone been a true circle in all its parts ought to be similar for similar distances.
The barometric readings are corrected to the freezing-point density of the atmosphere, as also to the level of the ocean, and are further reduced by comparison with the Standard Barometer at the New Observatory.
Footnote 138: For a discussion of the barometric perturbations on the Amazon, see American Journal of Science for Sept.
No other living creature can remove at pleasure to so great a distance from the earth; and it seems to fly and respire as easily under the low barometric pressure of thirteen inches as at the sea-shore.
After stating that, owing to the very small barometric pressure in Mars, water would boil at 110° F.
Whence as regards both water-vapour and carbon-dioxide we have reason to think them in relatively greater quantity than in our own air at corresponding barometric pressure.
His barometric element was a type of aneroid, which Hipp had already used but which Richard may have also adopted from a type of steam gauge.
The relatively small area of ice cooled the air and gave rise to an area of high barometric pressure.
On the other hand the peculiar way in which activity upon the margins of the sun appears to be correlated not only with atmospheric electricity, but with barometric pressure, seems to be equally strong evidence in the other direction.
Thus, wherever we turn, storms and the related barometric changes seem to be most frequent and severe at the very times when earthquakes are also most frequent.
In the first place, recent investigations show that in a great many cases changes in barometricpressure precede changes in temperature and apparently cause them by altering the winds and producing storms.
But any such change in the temperature of the upper air would influence the lower air through changes in barometric pressure.
In the second place, because of the unusually high pressure over the continent, the barometric gradients apparently became intensified.
Changes in the load of the earth's crust due to erosion and the deposition of sediment, no matter how rapid they may be from the geological standpoint, are slow compared with those due to changes in barometric pressure.
In high latitudes and in regions of abundant storminess most of these factors generally combine with barometric pressure to produce frequent changes in the load of the earth's crust, especially in winter.
The contrasts in temperature thus produced must cause similar contrasts in atmospheric pressure, and hence stronger barometric gradients.
The third, or meteorological hypothesis, which makes barometric pressure the main intermediary between solar activity and earthquakes, seems at first sight almost as improbable as the thermal and electrical hypotheses.
A drop of an inch in barometricpressure is equivalent to the removal of about five inches of solid rock.
A drop of two inches in barometric pressure means that a load of about two million tons is removed from each square mile of land; the corresponding rise of pressure means the addition of a similar load.
If in a comparatively short time an animal or plant accustomed to thirty inches of barometric pressure can contrive to subsist sensibly unchanged at eighteen, it would be rash to set limits to what time may not do.
From them it would seem that the air must be rare, not more than about four inches of barometric pressure, as we reckon it, and probably less; a thin, high air more rarefied than prevails upon our highest mountain tops.
With so gradual a gradient in barometric pressure there and so low a set of contour lines, altitude must be a negligible factor in Martian surface meteorologic phenomena.
Deer range to heights where the barometric pressure is but three fifths that of their generic habitat.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "barometric" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: cyclonic; elemental; isometric
