Upon the electrical experiments to determine the location of the bullet in the body of the late President Garfield; and upon a successful form of induction balance for the painless detection of metallic masses in the human body . \s ^. 13 the best shape of coil. For this purpose Mr. Tainter con-structed the instruments shown in Fig-. 8. Circular grooves wereturned in two I)()ards, one of which is shown in perspective atA and the (»tliei in section at 1). An insulated copper wirecoidd he pressed into any of these grooves so as to give thewire an exactly cii-cular siiape of known (hanieter, and
Upon the electrical experiments to determine the location of the bullet in the body of the late President Garfield; and upon a successful form of induction balance for the painless detection of metallic masses in the human body . \s ^. 13 the best shape of coil. For this purpose Mr. Tainter con-structed the instruments shown in Fig-. 8. Circular grooves wereturned in two I)()ards, one of which is shown in perspective atA and the (»tliei in section at 1). An insulated copper wirecoidd he pressed into any of these grooves so as to give thewire an exactly cii-cular siiape of known (hanieter, and tlie twoends were passed tlnxnigh an oritice in the liack of the hoard,making connection with a similar ring of wire in the other in-strument as showMi. A small sec(>n(larv coil (B) of tine wire,which coidd l»c moved with nio(lerate friction upon the hoi-i-zontal rod, was connected to another similar coil, (F,) and toa telephone; and a small hi-ass Iing, (C,) which could also l»emoved along the horizontal rod, was used instead of a hulletto distuil) the halance. In nud-wing an experiment with this aj)paratus the secondarycoil (J3) was tirst ])laced within tiie primary ring and in thesame plane with it, and the hahmcing co
Size: 1026px × 2436px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthoryapamphl, bookcentury1800, bookdecade1880, bookyear1882
