The process of filling thermometers with mercury shows one use of producing a high degree of rarefaction by heat.
This cause was afterward ascertained, deductively, to be the rarefaction of the air, occasioned by the increase of temperature as the day advances.
Though the distance travelled during the day was only six miles, I felt a good deal fatigued, and suffered much from headache, caused by the rarefaction of the air.
During these three days, I suffered very considerably from the effects of the rarefaction of the air, being never free from a dull headache, which was increased on the slightest exertion.
By the disease the bone has already been made brittle, its substance and ligamentous attachments perchance weakened and broken up by a slow-spreading caries, and rarefaction of the remaining bone substance rendered almost certain.
But there was some inherent incapacity in the Greek intellect for arriving at monotheism by a process of rarefaction and purification.
It differs in various substances in virtue of its rarefaction and condensation.
Grotthus had apparently shown that rarefaction by heat destroys the combustibility of gaseous mixtures; those of Davy, however, proved that it enables them to explode at a lower temperature.
The same law was found to apply to the flames of other bodies; those requiring the least heat for their combustion always sustaining the greater rarefaction without being extinguished.
It had been long known that flame ceased to burn in highly rarefied air; but the degree of rarefaction necessary for this effect had been very differently stated.
Hitherto he had only considered the effects of rarefaction, when produced by the diminution of pressure; he had next to investigate the phenomena of rarefaction when occasioned by expansion from heat.
When the air becomes lighter, it is said to be rarefied, and this rarefaction ought apparently to be greatest where the temperature is highest.
To take the case of the monsoons of Hindostan: we have seen above how the rarefaction of the air in Central Asia attracts the southeast trade-wind of the southern hemisphere across the equator.
The reason of this is that the districts toward which the air is sucked in are not those which are absolutely hottest, but those where the rarefaction of the air is greatest.
In our winter the region where the rarefaction is greatest is the continent of Australia; and accordingly, in its turn, it sucks the north-east trade-wind of the northern hemisphere across the equator.
The pulse of condensation and rarefaction which travels the length of the wire is called a wave, although it bears little or no resemblance to the familiar water wave.
Again the process of transformation is seen in rarefaction and condensation; and the attributes of substance are those which were common to the early hylozoists.
We have seen that this distinction was latent in Anaximenes's process of rarefactionand condensation.
He said that things are produced from air by rarefaction and condensation.
We have before remarked that the germ of the Atomic philosophy was contained in the process of rarefaction and condensation.
Which multiplication cannot be natural: since the matter cannot naturally extend beyond a certain fixed quantity; nor again does anything increase naturally, save either by rarefaction or the change of something else into it.
And those among them who admitted movement, did not consider it except as regards certain accidents, for instance, in relation to rarefaction and condensation, by union and separation.
Wherefore, as no rarefaction is apparent in such multiplication of matter, we must admit an addition of matter: either by creation, or which is more probable, by conversion.
Although air as long as it is in a state of rarefaction has neither shape nor color, yet when condensed it can both be shaped and colored as appears in the clouds.
Consequently no matter can be multiplied save either by rarefaction as when air is made from water; or by the change of some other things, as fire is multiplied by the addition of wood; or lastly by creation.
The effect of the first is more or less considerable according to the pressure of the air upon the water, and consequently, to the degree of rarefactionwhich the air undergoes.
Naphtha in contact with red hot iron glows with a lambent flame at a rarefaction of thirty times, though its flame ceases at an atmospheric rarefaction of six.
This rarefaction of the spongy bone is the earliest change seen with the X-rays.
When there is marked rarefaction of the bone at the ossifying junction, the epiphysis is liable to be separated--epiphysiolysis.
The wave, or ripple cloud, has been explained by von Helmholtz and von Bezold to be due to the undulations in a horizontal current producing alternate rarefaction and condensation of its water-vapour through changes of temperature.
But the disturbance we call rarefaction moves in air with the same velocity as a condensation.
All these possible sources of error due to the rarefaction of the atmosphere have been most carefully studied, but even now we must allow 10 to 30 feet as possible error due to the rarefaction of the atmosphere.
In the higher altitude, when the rarefactionof the atmosphere increases, the ray assumes a less curved path.
This is obviously a very fruitful source of error, and the difficulty of determining the error is increased by the fact that the curvature of the ray varies with the rarefaction of the atmosphere.
That the truth regarding the nature of body is obscured by the opinions respecting rarefaction and a vacuum with which we are pre- occupied.
That rarefaction cannot be intelligibly explained unless in the way here proposed.
Finite things were formed from the infinite air by compression and rarefaction produced by eternally existent motion; and heat and cold resulted from varying degrees of density of the primal element.
The mechanical difficulty of commanding a sufficient amount of rarefaction led to the abandonment of the system for railway purposes.
The degree of rarefactionwas determined by a glass tube fixed to the bottom of the smoke-box and descending into a bucket of water, the tube being open at both ends.
As the rarefaction took place, the water would, of course, rise in the tube, and the height to which it rose above the surface of the water in the bucket was made the measure of the amount of rarefaction.
This rarefaction on the upper side will render more effective the pressure of the compressed air again admitted through the engine supply port S on the underside of division D.
By the time they have returned to their original position, the pulse of air compression has traveled up the pipe in the form of a sound wave, and the complementary rarefaction follows.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "rarefaction" in a variety of sentences. We hope that you will now be able to make sentences using this word.
