Facts in reference to the spark, &c,from a long conductor uniting the poles of a galvanic battery     

Joseph Henry 《Journal of The Franklin Institute》1835,19(3):169

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The electron in chemistry     

Joseph John Thomson 《Journal of The Franklin Institute》1923,195(6):737-785

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Section of physics and chemistry and section of photography and microscopy: A joint meeting of the Sections was held in the Hall of the Institute on Thursday evening,December 7, 1922, at eight o'clock,with Dr. H. J. M. Creighton in the Chair. The minutes of the previous meeting were approved as published     

Joseph S. Hepburn 《Journal of The Franklin Institute》1923,195(1):131-132

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The electron in chemistry     

Joseph John Thomson 《Journal of The Franklin Institute》1923,195(5):593-620

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Bridge specifications     

Joseph M. Wilson 《Journal of The Franklin Institute》1875,100(2):116-120

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Transmission of motion     

Joseph Harrison 《Journal of The Franklin Institute》1872,94(4):233-243

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Section of physics and chemistry: A meeting of the section was held in the Hall of the Institute on thursday evening,November 15, 1917, at 8 o'clock,with Prof. Alexander E. Outerbridge,Jr., in the chair. The minutes of the previous meeting were read and approved     

Joseph S. Hepburn 《Journal of The Franklin Institute》1917,184(6):912

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A vacuum tube amplifier for small direct voltages     

Joseph Razek 《Journal of The Franklin Institute》1935,219(2):137-155

A simple means for combining a small direct voltage with an alternating carrier is described. This consists of connecting the direct voltage in series with an alternating voltage of the same order of magnitude. The two are then passed through a copper oxide rectifier which suppresses one part of the cycle. The degree of suppression depends upon the magnitude of the direct voltage. The resulting fluctuating voltage can be amplified to any desired degree in a conventional amplifier.The theory for the simple case of pure resistance is worked out, with an example. The solution of the more general case with inductances is indicated.The practical circuit which has been used for the amplification of thermo-couple currents, and as a galvanometer power multiplier, is shown.  相似文献   

Leonardo Da Vinci,The Anatomist, 1452–1519: By J. Playfair McMurrich Professor of Anatomy University of Toronto. Carnegie Institution of Washington Publication No. 411. Williams & Wilkins Company,Baltimore, Copyright 1930, xx — 265 pages,price $6.oo     

Joseph S. Hepburn 《Journal of The Franklin Institute》1931,211(3):393-394

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The role of upper torso and pelvis rotation in driving performance during the golf swing   总被引：3，自引：2，他引：1  

Myers J  Lephart S  Tsai YS  Sell T  Smoliga J  Jolly J 《Journal of sports sciences》2008,26(2):181-188

While the role of the upper torso and pelvis in driving performance is anecdotally appreciated by golf instructors, their actual biomechanical role is unclear. The aims of this study were to describe upper torso and pelvis rotation and velocity during the golf swing and determine their role in ball velocity. One hundred recreational golfers underwent a biomechanical golf swing analysis using their own driver. Upper torso and pelvic rotation and velocity, and torso-pelvic separation and velocity, were measured for each swing. Ball velocity was assessed with a golf launch monitor. Group differences (groups based on ball velocity) and moderate relationships (r > or = 0.50; P < 0.001) were observed between an increase in ball velocity and the following variables: increased torso-pelvic separation at the top of the swing, maximum torso-pelvic separation, maximum upper torso rotation velocity, upper torso rotational velocity at lead arm parallel and last 40 ms before impact, maximum torso-pelvic separation velocity and torso-pelvic separation velocity at both lead arm parallel and at the last 40 ms before impact. Torso-pelvic separation contributes to greater upper torso rotation velocity and torso-pelvic separation velocity during the downswing, ultimately contributing to greater ball velocity. Golf instructors can consider increasing ball velocity by maximizing separation between the upper torso and pelvis at the top of and initiation of the downswing.  相似文献