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Who said: “I seem to have been only like a boy playing on the seashore, ... finding a smoother pebble or a prettier shell ... whilst the great ocean of truth lay all undiscovered before me.”
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Home > Category Index for Science Quotations > Category Index V > Category: Vapour

Vapour Quotes (9 quotes)

As lightning clears the air of impalpable vapours, so an incisive paradox frees the human intelligence from the lethargic influence of latent and unsuspected assumptions. Paradox is the slayer of Prejudice.
In George Edward Martin, The Foundations of Geometry and the Non-Euclidean Plane (1982), 110.
Science quotes on:  |  Air (151)  |  Assumption (49)  |  Clear (52)  |  Free (59)  |  Human (445)  |  Influence (110)  |  Intelligence (138)  |  Latent (9)  |  Lightning (28)  |  Paradox (35)  |  Prejudice (58)  |  Unsuspected (5)

But who can say that the vapour engine has not a kind of consciousness? Where does consciousness begin, and where end? Who can draw the line? Who can draw any line? Is not everything interwoven with everything? Is not machinery linked with animal life in an infinite variety of ways?
Science quotes on:  |  Animal (309)  |  Consciousness (71)  |  Engine (25)  |  Infinite (88)  |  Interwoven (6)  |  Life (917)  |  Link (29)  |  Machinery (25)  |  Variety (53)

I finally saw that the blood, forced by the action of the left ventricle into the arteries, was distributed to the body at large, and its several parts, in the same manner as it is sent through the lungs, impelled by the right ventricle into the pulmonary artery, and that it then passed through the veins and along the vena cava, and so round to the left ventricle in the manner already indicated. Which motion we may be allowed to call circular, in the same way as Aristotle says that the air and the rain emulate the circular motion of the superior bodies; for the moist earth, warmed by the sun, evaporates; the vapours drawn upwards are condensed, and descending in the form of rain, moisten the earth again; and by this arrangement are generations of living things produced.
From William Harvey and Robert Willis (trans.), The Works of William Harvey, M.D. (1847), 46.
Science quotes on:  |  Air (151)  |  Aristotle (141)  |  Arrangement (45)  |  Artery (8)  |  Blood (95)  |  Body (193)  |  Circular (3)  |  Earth (487)  |  Emulate (2)  |  Evaporate (3)  |  Generation (111)  |  Impelled (2)  |  Living (44)  |  Lung (17)  |  Motion (127)  |  Produced (8)  |  Rain (28)  |  Sun (211)  |  Superior (30)  |  Thing (37)  |  Upwards (4)  |  Vein (11)  |  Ventricle (5)

Sea water is rendered potable by evaporation; wine and other liquids can be submitted to the same process, for, after having been converted into vapours, they can be condensed back into liquids.
Aristotle
In Meteorology (c. 350 B.C.), Book 2, 2. Translation as shown in Joseph William Mellor, A Comprehensive Treatise on Inorganic and Theoretical Chemistry (1922), Vol. 1, 37.
Science quotes on:  |  Condense (6)  |  Convert (15)  |  Desalination (3)  |  Distillation (9)  |  Evaporation (5)  |  Liquid (25)  |  Potable (2)  |  Process (201)  |  Wine (23)

The cause of rain is now, I consider, no longer an object of doubt. If two masses of air of unequal temperatures, by the ordinary currents of the winds, are intermixed, when saturated with vapour, a precipitation ensues. If the masses are under saturation, then less precipitation takes place, or none at all, according to the degree. Also, the warmer the air, the greater is the quantity of vapour precipitated in like circumstances. ... Hence the reason why rains are heavier in summer than in winter, and in warm countries than in cold.
Memoirs of the Literary and Philosophical Society of Manchester (1819), 3, 507. Quoted in George Drysdale Dempsey and Daniel Kinnear Clark, On the Drainage of Lands, Towns, & Buildings (1887), 246.
Science quotes on:  |  Air (151)  |  Cause (231)  |  Cold (38)  |  Doubt (121)  |  Mixture (22)  |  Precipitation (5)  |  Rain (28)  |  Saturation (5)  |  Summer (26)  |  Temperature (42)  |  Warmth (7)  |  Wind (52)  |  Winter (22)

The floating vapour is just as true an illustration of the law of gravity as the falling avalanche.
The Century Illustrated Monthly Magazine, May 1883 to October 1883 (1883), 26, 539.
Science quotes on:  |  Avalanche (3)  |  Fall (89)  |  Float (12)  |  Gravity (89)  |  Illustration (24)  |  Law (418)

The primary rocks, ... I regard as the deposits of a period in which the earth's crust had sufficiently cooled down to permit the existence of a sea, with the necessary denuding agencies,—waves and currents,—and, in consequence, of deposition also; but in which the internal heat acted so near the surface, that whatever was deposited came, matter of course, to be metamorphosed into semi-plutonic forms, that retained only the stratification. I dare not speak of the scenery of the period. We may imagine, however, a dark atmosphere of steam and vapour, which for age after age conceals the face of the sun, and through which the light of moon or star never penetrates; oceans of thermal water heated in a thousand centres to the boiling point; low, half-molten islands, dim through the log, and scarce more fixed than the waves themselves, that heave and tremble under the impulsions of the igneous agencies; roaring geysers, that ever and anon throw up their intermittent jets of boiling fluid, vapour, and thick steam, from these tremulous lands; and, in the dim outskirts of the scene, the red gleam of fire, shot forth from yawning cracks and deep chasms, and that bears aloft fragments of molten rock and clouds of ashes. But should we continue to linger amid a scene so featureless and wild, or venture adown some yawning opening into the abyss beneath, where all is fiery and yet dark,—a solitary hell, without suffering or sin,—we would do well to commit ourselves to the guidance of a living poet of the true faculty,—Thomas Aird and see with his eyes.
Lecture Sixth, collected in Popular Geology: A Series of Lectures Read Before the Philosophical Institution of Edinburgh, with Descriptive Sketches from a Geologist's Portfolio (1859), 297-298.
Science quotes on:  |  Abyss (20)  |  Age (137)  |  Ash (16)  |  Chasm (7)  |  Cloud (44)  |  Crack (11)  |  Current (43)  |  Deposition (3)  |  Era (14)  |  Fire (117)  |  Guidance (12)  |  Hell (29)  |  Igneous (2)  |  Linger (6)  |  Metamorphosis (4)  |  Molten (2)  |  Period (49)  |  Poet (59)  |  Rock (107)  |  Sea (143)  |  Sin (27)  |  Solitary (13)  |  Steam (24)  |  Suffering (26)  |  Wave (55)  |  Wild (39)

The sun, moving as it does, sets up processes of change and becoming and decay, and by its agency the finest and sweetest water is every day carried up and is dissolved into vapour and rises to the upper region, where it is condensed again by the cold and so returns to the earth. This, as we have said before, is the regular course of nature.
Aristotle
Meteorology (350 B.C.), Book II, translated by E. W. Webster. Internet Classics Archive, (classics.mit.edu).
Science quotes on:  |  Cold (38)  |  Condensation (8)  |  Meteorology (29)  |  Rain (28)  |  Sun (211)  |  Water Cycle (3)

Without any doubt, the regularity which astronomy shows us in the movements of the comets takes place in all phenomena. The trajectory of a simple molecule of air or vapour is regulated in a manner as certain as that of the planetary orbits; the only difference between them is that which is contributed by our ignorance. Probability is relative in part to this ignorance, and in part to our knowledge.
Philosophical Essay on Probabilities (1814), 5th edition (1825), trans. Andrew I. Dale (1995), 3.
Science quotes on:  |  Air (151)  |  Astronomy (175)  |  Comet (43)  |  Difference (208)  |  Doubt (121)  |  Ignorance (190)  |  Knowledge (1128)  |  Molecule (125)  |  Movement (65)  |  Orbit (58)  |  Phenomenon (218)  |  Plant (173)  |  Probability (83)  |  Regularity (24)  |  Regulation (18)  |  Trajectory (4)


Carl Sagan Thumbnail In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
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- 90 -
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- 70 -
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- 40 -
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- 30 -
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