Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 418
Il ^ ^1 •J^ fy J -^r-r.^ … Fig. 8.extent upon the economy of electric production and trans-mission. Electrical engineers tell us that they can deliverelectric energy several miles from the generating stationwith an efficiency of eighty per cent. If this is true its con-version into compressed air and its use as a power under…
Science · Technology · Meteorology · Patents
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![An illustration from History of Clear Creek and Boulder Valleys, Colorado. Containing a brief history of the State of Colorado [by W. B. Vickers] ... a history of Gilpin, Clear Creek, Boulder and Jefferson Counties [respectively by J. Burrell, A. Frost, A. Bixby and E. L. Berthoud] and biographical sketches (1880)](https://img.insideoutlibrary.com/img/200/bl-bl_000719958_0-283-1.webp)
