Search results - Page 20

… pieces bore ¾-inch holes and suspend the drum by an iron rod run through these. Wind on the drum 800 or 900 turns of … The spark-gap is placed above the coil and is made of brass rods ¼, inch in diameter and 2½ feet long and supported by … two inches long fitted into the uprights and allowing the rods to slide freely. The ends should be filed to a sharp …

… in electricity because now scientists could study electrodynamics , whereas before they were limited to studying … on the front plate. Front and rear neutralizing rods scoop the charges up and move them to more desirable … three major parts: rotating parallel plates, neutralizing rods, and collecting combs (see photos). Today’s bench-sized …

… diameter brass balls soldered to 1/16-inch stainless steel rods bent to form a 3-inch gap above the secondary coil. …

… the other connected to one terminal of the Tesla coil, the production of fantastic brush discharges, the melting of fine … winding. This form is carefully centered and a metal rod about six inches long of any convenient size is passed … this fine wire in layers if it is allowed to slide over a rod a foot or so away and guided with one hand while winding …