Journal of the Franklin InstituteElsevier, 1877 - Electronic journals Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |
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action amount aphelion apparatus arsenic acid atmosphere boiler carbon cent centimetres centre chamber charge chemical CIV.-(THIRD SERIES coal combustion compressed condensation construction contains copper cubic curve cylinder decimal deposited diameter effect efficiency electric energy equal equation error expansion experiments explosion factors of safety feet fluid fly-wheel Franklin Institute furnace gases gauge give glass grains Gramme machine gun-cotton heat engines inches increase iron jetties JOURNAL Least Squares length light liquid lxxiv machine manufacture means measure mechanical metal method metre millimetres motion nitric Nitrogen nitrous acid observations obtained oxide oxygen pass Patents perihelion phonography pipe piston plate platinum pounds powder practical pressure probability produced Prof proportion quantity Rendus solar steam engine sulphuric acid surface temperature theoretical thickness tion tube Uranus vapor velocity vessel vibrations volume weight wire
Popular passages
Page 280 - ... distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another, is to me so great an absurdity, that I believe no man who has in philosophical matters a competent faculty of thinking, can ever fall into it. Gravity must be caused by an agent acting constantly according to certain laws ; but whether this agent be material or immaterial, I have left to the consideration of my readers.
Page 264 - It is impossible by means of inanimate material agency to derive mechanical effect from any portion of matter by cooling it below the temperature of the coldest of the surrounding objects.
Page 359 - THE FRANKLIN INSTITUTE is issued in monthly numbers, of seventy-two pages each, largely illustrated, forming two volumes annually. Its object is to encourage original research, and disseminate useful knowledge in all matters relating to the practical application of science, but more especially to engineering and the mechanic arts.
Page 317 - If this axiom be denied for all temperatures, it would have to be admitted that a self-acting machine might be set to work and produce mechanical effect by cooling the sea or earth, with no limit but the total loss of heat from the earth and sea, or, in reality, from the whole material world.
Page 82 - This oxygen group alone is almost sufficient to prove the presence of oxygen in the sun, for not only does each of the four components have a representative in the solar spectrum, but the relative strength and the general aspect of the lines in each case is similar. I do not think...
Page 164 - Three lines are in harmonical proportion, when the first is to the third, as the difference between the first and second, is to the difference between the second and third ; and the second is called a harmonic mean between the first and third. The expression 'harmonical proportion...
Page 72 - The course of the Stevens Institute is of four years' duration, and covers all that appertains to the profession of a Mechanical Engineer. By means of workshops provided with excellent machinery, Physical Laboratories whose appointments are without an equal, and with the finest Cabinets of Instruments, every opportunity for the acquisition of thorough and practical knowledge is afforded".
Page 431 - UNAPPROACHED BY ANY OTHER PERIODICAL in the world, of the most valuable Literary and Scientific matter of the day, from the pens of the foremost Essayists, Scientists, Critics, Discoverers and Editors, representing every department of Knowledge and Progress.
Page 83 - ... yet been an opportunity to make the necessary detailed comparisons. In order to be certain that a line belongs to Oxygen, I have compared, under various pressures, the spectra of Air, Oxygen, Nitrogen, Carbonic Acid, Carburetted Hydrogen, Hydrogen and Cyanogen. Where these gases were in Pliicker's tubes a double series of photographs has been needed, one set taken with, and the other without Leyden jars. As to the spectrum of Nitrogen and the existence of this element in the sun there is not...