Signalling through space without wires : being a description of the work of Hertz & his successors (1900)
Lodge, Oliver, Sir, 1851-1940, Hertz, Heinrich, 1857-1894 · London : "The Electrician" Printing and Publishing Company, Limited · leaf 129
magnet the charge of -270 voltsdisappeared completely in five seconds, when the magnet wasexcited it only fell about half that amount in the same time.With hydrogen at 0-24mm. the result was much the same, andat either greater or less pressure in both cases the magnet hadless effect. In oxygen the… … To Pump.- 13 6 Fig. 61. Explanation of Fig. 61.—P is the plae of amalgamated zinc, and R is theearth ring, as before. Ultra-violet light is introduced through a quartzwindow Q from a spark gap r. The vessel has a joint at the middle, sothat the sensitive plate can be got at and changed. Magnet…
Electric waves · Telegraph, Wireless · Electricity · Wireless Technology
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
