Nikola Tesla - Free-Energy Devices

HIGH FREQUENCY AND HIGH POTENTIAL CURRENTS. 289Since I have exhibited these phenomena for the first time, Ihave obtained some other interesting effects. For instance, Ihave produced the incandescence of a button, filament, or wireenclosed in a tube. To get to this result it was necessary toeconomize the energy which is obtained from the field, and directmost of it on the small body to be rendered incandescent. Atthe beginning the task appeared difficult, but the experiencesgathered permitted me to reach the result easily. In Fig. 163and Fig. 164, two such tubes are illustrated, which are prepared forthe occasion. In Fig. 163 a short tube TJ, sealed to another longtube T, isprovided with a stem with a .$, platinum wire sealed inthe latter. A very thin lamp filament is fastenedI,to this wireand connection to the outside is made through a thin copper wirew. The tube isprovided with outside and inside coatings, c andreach with conducting,and the space above with insulating, powder. TheseGJ, respectively, and is filled as far as the coatingscoatings are merely used to enable me to perform two experimentswith the tube namely, to produce the effect desired eitherby direct connection of the body of the experimenter or of anotherbody to the wire w, or by acting inductively through theglass.The stem s isprovided with an aluminum tube for,purposes before explained, and only a small part of the filamentreaches out of this tube. By holding the tube T : anywhere inthe electrostatic field, the filament is rendered incandescent.A more interesting piece of apparatus is illustrated in Fig. 164.The construction is the same as before, only instead of the lampfilament a small platinum wire ^>, sealed in a stem s,and bentabove it in a circle, is connected to the copper wire w, which isjoined to an inside A coating c. small stem * M is provided witha needle, on the point of which is arranged, to rotate very freely,a very light fan of mica v. To prevent the fan from falling out,a thin stem of glass