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Thermal   Listen
adjective
Thermal  adj.  
1.
Of or pertaining to heat; warm; hot; as, the thermal unit; thermal waters. "The thermal condition of the earth."
2.
Caused by or affected by heat; as, thermal springs.
3.
Designed to retain heat; as, thermal underwear.
Thermal conductivity, Thermal spectrum. See under Conductivity, and Spectrum.
Thermal unit (Physics), a unit chosen for the comparison or calculation of quantities of heat. The unit most commonly employed is the amount of heat necessary to raise the temperature of one gram or one pound of water from zero to one degree Centigrade. See Calorie, and under Unit.






Collaborative International Dictionary of English 0.48








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"Thermal" Quotes from Famous Books



... evolution of heat. The radium salt itself, and the case containing it, absorbed the major part of the radiation, and were thus maintained at a temperature measurably higher than that of the surroundings. The rate of thermal evolution was such that it appeared that one gramme of pure radium must emit about 100 gramme-calories of heat in an hour. This observation, naturally as it follows from the phenomena previously discovered, first called attention to the question of the source of ...
— Darwin and Modern Science • A.C. Seward and Others

... for every home. Here's the producer and preserver of clear, clean skin, good spirits, great physical exuberance that puts a sharper edge on the enjoyment of living. The "Robinson" Thermal Bath Cabinet is wonderfully simple. A bath in it costs only 2 cents and takes only 15 minutes. How much better this is than having to go to some hotel or public Turkish Baths and pay out a lot of money for something not a whit better and not one-tenth ...
— The Handy Cyclopedia of Things Worth Knowing - A Manual of Ready Reference • Joseph Triemens

... a volcanic vent of some kind." Then dimly came the recollection of Eskimo legends concerning thermal springs beyond the desolate and unknown ...
— Astounding Stories, February, 1931 • Various

... accessible only from a spaceship or air flyer, and, at that altitude, had to be pressurized and sealed against the thin, cold air outside. Within, the temperature was kept constant to a fraction of a degree to keep thermal expansion from throwing ...
— Islands of Space • John W Campbell

... use the scientific term, hydro-thermal action—has played such an important part in the deposition of metals that I cannot but think that under educated intelligence it will prove a powerful agent in their extraction. About fourteen years ago I obtained some rather remarkable results from simply boiling auriferous ...
— Getting Gold • J. C. F. Johnson

... appearance was very inviting. Its FAUNA and FLORA, however, were poor in the extreme. The only specimens of quadrupeds, birds, fish and cetacea were a few wild boars, stormy petrels, albatrosses, perch and seals. Here and there thermal springs and chalybeate waters escaped from the black lava, and thin dark vapors rose above the volcanic soil. Some of these springs were very hot. John Mangles held his thermometer in one of them, and found the temperature was 176 degrees Fahrenheit. Fish caught in the sea a few yards off, cooked ...
— In Search of the Castaways • Jules Verne

... in the foregoing a remarkable isothermal result. The heat of compression is so thoroughly absorbed that the thermal loss is only 1.6 per cent.; but the loss by friction of the engine is 14.5 per cent., and the net economy of the whole system is no greater than that of the best American dry compressor, which loses about one-half the theoretical loss due to heat ...
— Scientific American Supplement, No. 799, April 25, 1891 • Various

... winter at an average of eight degrees less at St. Paul. The reason is found in the fact of a more humid atmosphere existing at Utica, and, indeed, at all points in the variable-climatic district, whether north or south of either the thermal lines or latitudes ...
— Minnesota; Its Character and Climate • Ledyard Bill

... a unity and just as indestructible as matter. But matter, though one, has many different aspects, and the same is true of energy. Till recently only four forms of energy, convertible into one another, have been known to us: energies known as the dynamic, the thermal, the electric, and the chemic. But these four aspects of energy are far from exhausting all the varieties of its manifestation. The forms in which energy may manifest itself are very diverse, and ...
— Redemption and Two Other Plays • Leo Tolstoy et al

... Charles Daubeny, F.R.S., Description of Active and Extinct Volcanoes, of Earthquakes, and of Thermal Springs, with remarks on the causes of these phenomena, the character of their respective products, and their influence on the past and present condition of the globe (2nd edition, 1848). In this work the author gives detailed descriptions of almost ...
— Volcanoes: Past and Present • Edward Hull

... brown, and the action of the water in its rapid passage down the sides of the canon has worn the fragments of shale into countless capricious forms. Jets of steam issue from the sides of the canon at frequent intervals, marking the presence of thermal springs and active volcanic forces. The evidence of a recession of the river through the canon is designated by the ridges apparent on its sides, and it is not improbable that at no distant day the lower fall will become blended by this process with the ...
— The Discovery of Yellowstone Park • Nathaniel Pitt Langford

... were identified with Apollo both in his capacity of god of healing and also that of god of light.[61] The two functions are not incompatible, and this is suggested by the name Grannos, god of thermal springs both in Britain and on the Continent. The name is connected with a root which gives words meaning "burning," "shining," etc., and from which comes also Irish grian, "sun." The god is still remembered in a chant sung round ...
— The Religion of the Ancient Celts • J. A. MacCulloch

... lower limit of surface drainage is sea level, subterranean water circulates much below that depth, and is brought again to the surface by hydrostatic pressure. In many instances springs have a higher temperature than the average annual temperature of the region, and are then known as thermal springs. In regions of present or recent volcanic activity, such as the Yellowstone National Park, we may believe that the heat of thermal springs is derived from uncooled lavas, perhaps not far below the surface. But when hot springs occur ...
— The Elements of Geology • William Harmon Norton

... to mechanical processes; while the remaining five treat of radiant heat, the law and conditions of its movement, its influence upon matter, its relations to other forces, terrestrial and solar radiation, and the thermal energies of the solar system. But these subjects no longer wear their old aspect. Novel questions are presented, starting fresh trains of experiment; facts assume new relationships, and are interpreted in the light of a new ...
— The Atlantic Monthly, Vol. 13, No. 78, April, 1864 • Various

... bubbling from the cold moist earth? Cupid, once upon a time, playfully dipped herein his arrows of steel, and delighted with the hissing sound, he said, boil on for ever, and retain the memory of my quiver. From that time it is a thermal spring, in which few venture to bathe, but whosoever does, his heart is instantly ...
— The Anatomy of Melancholy • Democritus Junior

... him jerk his glance away from the periscope in his helmet and check his radiation detectors again. Not much change. Relief swept over him as he looked back at the reactor itself. The normally dead black walls were glowing a dull red. It was pure thermal heat, but it shouldn't ...
— The Bramble Bush • Gordon Randall Garrett

... similar in kind whatever the irritant may be. The extent to which the process may go, however, and its effects on the part implicated and on the system as a whole, vary with different irritants and with the intensity and duration of their action. A mechanical, a thermal, or a chemical irritant, acting alone, induces a degree of reaction directly proportionate to its physical properties, and so long as it does not completely destroy the vitality of the part involved, the changes ...
— Manual of Surgery - Volume First: General Surgery. Sixth Edition. • Alexis Thomson and Alexander Miles

... those lowly gelatinous forms which are some of them so transparent and colourless as to be with difficulty distinguished from the water they float in, is not more like its medium in chemical, mechanical, optical, thermal, and other properties, than it is in the passivity with which it submits to all the actions brought to bear on it; while the mammal does not more widely differ from inanimate things in these properties than ...
— Essays: Scientific, Political, & Speculative, Vol. I • Herbert Spencer

... any idea how bad they'll be. The last periastron was ninety years ago, and we've only been here for sixty-odd; all we have is verbal accounts from memory from the natives, probably garbled and exaggerated. We had pretty bad storms right after transit a year ago; they'll be much worse this time. Thermal convections; air starts to cool when it gets dark, and then heats ...
— Oomphel in the Sky • Henry Beam Piper

... gratuitously given to the subscribers to this Edinburgh Edition a twenty-eighth volume, consisting of various odds and ends not hitherto made public. Of this, 'A New Form of Intermittent Light for Lighthouses' and 'The Thermal Influence of Forests,' recall the period of his engineering and scientific training; and the interesting facsimile reproductions of the quaint 'Moral Emblems,' written by him at Davos in 1880 and 1882, and printed with ...
— Robert Louis Stevenson • Margaret Moyes Black

... I went for a stroll in the park of the thermal establishment. This led towards the little Auvergnese station of Chatel Guyot, hidden in a gorge at the foot of the high mountain, of that mountain from which flow so many boiling springs, arising from the deep bed of extinct volcanoes. Over there, above us, the domes, which ...
— The Works of Guy de Maupassant, Volume VIII. • Guy de Maupassant

... what has been mentioned, thermal effects have been attributed to the vital activity of the leaves in the transudation of water, and even to the respiration and circulation of living wood. The whole actual amount of thermal influence, however, is so small that I may rest satisfied with ...
— The Works of Robert Louis Stevenson - Swanston Edition Vol. XXII (of 25) • Robert Louis Stevenson

... vast continent of South America. It was the culminating point of the highlands of Guiana. For ages this granite peak was the solo representative of dry land in our hemisphere south of the Canada hills. In process of time, a cluster of islands rose above the thermal waters. They were the small beginnings of the future mountains of Brazil, holding in their laps the diamonds which now sparkle in the crown of Dom Pedro II. Long protracted eons elapsed without adding a page to the geology of South America. The Creator seems to have been busy elsewhere. ...
— The Andes and the Amazon - Across the Continent of South America • James Orton

... and place, more than a few literary critics of genuine incision, taste, and instinct; and these qualities, rare enough in themselves, are further debilitated, in many cases, by excessive geniality or indigestion. The ideal literary critic should be guarded as carefully as a delicate thermal instrument at the Weather Bureau; his meals, friendships, underwear, and bank account should all be supervised by experts and advisedly maintained at a temperate mean. In the Almost Perfect State (so many phases of which have ...
— Plum Pudding - Of Divers Ingredients, Discreetly Blended & Seasoned • Christopher Morley

... lowest at the rear, where the batch is fed in, and graduates to its highest point just behind the openings thru which the glass is drawn off. This temperature is measured by special instruments called thermal couples—two metals joined and placed in the heat of the flame. The heat sets up an electric current in the joined metals, and this current is read on a galvanometer graduated to read degrees Fahrenheit instead of ...
— How To Write Special Feature Articles • Willard Grosvenor Bleyer

... there I could see puffs and jets of steam curling up into the air, called in Icelandic 'reykir,' issuing from thermal springs, and indicating by their motion the volcanic energy underneath. This seemed to justify my fears: But I fell from the height of my new-born ...
— A Journey to the Interior of the Earth • Jules Verne

... Sweeping in from the ocean forty miles away, they were deflected by Sonoma Mountain and shunted high into the air. Another thing, Trillium Covert and Madrono Ranch were happily situated in a narrow thermal belt, so that in the frosty mornings of winter the temperature was always several degrees higher than in the rest of the valley. In fact, frost was very rare in the thermal belt, as was proved by the successful cultivation of certain ...
— The Valley of the Moon • Jack London

... rather surprised to find that the coal and lubricating oil for the engine room were purchased by the manager himself, but not at all surprised to learn that he had never heard of such a quantity as a British Thermal unit and that he had absolutely no records to show the kind of coal most efficient under his boilers. A little further investigation showed that each head of department had charge of the stores of materials and supplies for his department and gave them out to employees upon a mere verbal request. ...
— Analyzing Character • Katherine M. H. Blackford and Arthur Newcomb

... Navy's report ended, one of the scientists asked to see the Tremonton Movie again; so I had the projectionists run it several more times. The man said that he thought the UFO's could be sea gulls soaring on a thermal current. He lived in Berkeley and said that he'd seen gulls high in the air over San Francisco Bay. We had thought of this possibility several months before because the area around the Great Salt Lake is inhabited by large white gulls. But the speed of the lone UFO as it left the main ...
— The Report on Unidentified Flying Objects • Edward Ruppelt

... frost as the vine, and smudging or heating the vineyards is too expensive to be practical. In growing grapes, therefore, the commonly recognized precaution of selecting a site near water, on slopes or in a warm thermal ...
— Manual of American Grape-Growing • U. P. Hedrick



Words linked to "Thermal" :   current of air, thermal barrier, solar thermal system, hot, hot spring, thermal emission, British thermal unit, thermal spring, caloric, air current, heat, thermal printer, thermal resistor, nonthermal



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