| 单词 | thermopile |
| 例句 | The measurements were chiefly of a qualitative character, and were made by interposing between the source and a thermopile a layer or plate of the substance to be examined. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z For years the efforts of inventors have been directed towards obtaining electrical energy from heat by means of the thermopile. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The principle of the thermopile we need not describe in detail. Colour Measurement and Mixture 2012-02-27T03:00:13.987Z The same author states that, "the earth is a great thermopile generating electric currents by the difference of potential between its heated and cooled parts." The Universe a Vast Electric Organism 2011-06-09T02:00:22.450Z At King's College," says Prof. Alfred M. Mayer, "Faraday, Wheatstone, Daniell, and Henry had met to try and evolve the electric spark from the thermopile. Famous Men of Science 2011-03-08T03:00:49.717Z Helmholtz takes the case of a circuit of resistance R in which acts an electromotive force due to a battery or thermopile. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z It might seem invidious to remark that but few know what is the real trouble with the thermopile. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z What the real limit of the spectrum is, is at present unknown; Mr. Langley with his bolometer, and rock-salt prisms, an instrument more sensitive than the thermopile, must have nearly reached it. Colour Measurement and Mixture 2012-02-27T03:00:13.987Z Its electrical conductivity is approximately 1.2, silver at 0� being taken as 100; it is the most diamagnetic substance known, and its thermoelectric properties render it especially valuable for the construction of thermopiles. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" This exquisitely sensitive instrument affords the means of measuring heat, not directly, like the thermopile, but in its effects upon the conduction of electricity. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Private Plants.—In spite of a great amount of ingenuity devoted to the development of the primary battery and the thermopile, no means of generation of large currents can compete in economy with the dynamo. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z This may be proved experimentally with proper apparatus, as for example with an instrument known as the thermopile. Aether and Gravitation The third or thermopile method is favored by the authors, who prefer a circuit of platinum and an alloy of platinum with ten per cent. of rhodium. Scientific American Supplement, No. 1082, September 26, 1896 If the eye should take the place of the thermopile it would be found that some of these rays did not affect it at all, while some would produce the sensation of light. Scientific American, Volume XLIII., No. 25, December 18, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. On the top of the mountain, at an elevation of ten thousand feet, he found that the moon's rays affected his thermopile to the same extent as a standard candle ten feet away. Scientific American Supplement, No. 443, June 28, 1884 Dr. G. Gore, F.R.S., has invented an improved thermopile for measuring small electromotive forces. Scientific American Supplement, No. 441, June 14, 1884. By means of an instrument known as the thermo-electric pile, or thermopile, the various heating power of the whole spectrum, visible and invisible, can be determined. Aether and Gravitation It has also been proposed by others to water-jacket the electrode chamber, and also to keep it cool by placing it in close proximity to the relatively cool joints of a thermopile. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. An ordinary lamp, with circular wick, and short glass cylinder, was wholly screened with a board, and a thermopile was so placed that its axis lay somewhat higher than the edge of the board. Scientific American Supplement, No. 385, May 19, 1883 We have no time or space here to describe Professor Langley's "bolometer;" it must suffice to say that it seems to stand to the thermopile much as that does to the thermometer. Scientific American Supplement, No. 443, June 28, 1884 So far as I know, this is the first application of the thermopile to variables. Scientific American Supplement, No. 358, November 11, 1882 Thus that inscrutable mode of force heat traverses the depths of space, reaches the earth, and turns the delicate balance of the thermopile. Scientific American Supplement, No. 288, July 9, 1881 We call those junctions in a thermopile 'couples,' and by getting the recording instruments sensitive enough, we can measure one one-thousandth of a degree. The Dream Doctor On the other hand, experiments made with sensitive thermopiles, in order to settle the question of emission of heat-rays from highly-heated gases, failed. Scientific American Supplement, No. 385, May 19, 1883 Gradually the light faded, as the thermopile adjusted itself to the change in temperature. The Dream Doctor In detecting the changes of variables, I have attempted to substitute, in place of the ordinary eye observations, a very delicate thermopile, which registers the changes in the star's heat. Scientific American Supplement, No. 358, November 11, 1882 Indeed, the thermopile in the hands of Lockyer has already made palpable the heat of the fixed stars. Scientific American Supplement, No. 288, July 9, 1881 Here I have the mechanism, operated by the feeble current from the thermopile, opening and closing switches, and actuating bells and lights. The Dream Doctor As the room-walls had pretty much a uniform temperature, the deflection of the galvanometer was but slight, when the tube-axis of the thermopile was directed anywhere outside of the hot-air current rising from the flame. Scientific American Supplement, No. 385, May 19, 1883 You see, down there I placed the couples of the thermopile beneath the electric furnace on the table. The Dream Doctor |
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