WIRELESS COMMUNICATION FROM AIR SHIPS :23 quency alternating currents charge the aerial wire E and the ground wire F negatively and positively un- til the potential difference is suffi- ciently great to break down the in- sulating film of air between the spark … ever, is of only momentary duration, FIG. 3. A WIRELESS TRANSMITTER for, as it surges to and fro in the aerial cuit is closed and the current from wire system, a large portion of its en- the battery energizes the primary of ergy is converted into electro-mag- the induction coil, when the inter-…
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
