Show simplicity 0 OF F RADIO by POWEL CROSLEY JR RADIO WAVES for discussion we had best go co down to tle the old swimming hole for or there we can study at first land hand some analogies of important radio phenomena ell a we will pick up some stones from the edge of the pond and toss loss them out into the clear still water As each pebble clashes spIns plashes pl ashes bes through the surface it will start a train of circular waves traveling out in all directions toward the shore in a similar manner the radio waves from a broadcasting station out in all directions ions lons RD 1 how radio waves may be linked to water waves if we can find a small board or piece of wood we will perform an all experiment peri ment that will clear up another point when we throw this anaid into the pool it will bounce up tip and down several times sending out a train of waves now we may picture a gibrat Ing electric current sending out radio waves in a similar manner these radio waves tire lire supposed oed by some scientists to travel in a certain invisible substance called the ether that pervades all space and all material bodies now we may picture the tha vibrating currents bouncing up tip an and flown down and splashing the surrounding 11 ether up and down so that a train of waves Is formed fortner in it whether or dot cot tills this ether idea Is perfectly accurate does not matter at least it gives elves us a picture to help us its understand how radio transmission is possible radio w seem very strange and mysterious because we cannot see them nor hear bear them nor i 10 r f feel ee I 1 tie ilcin I 1 in like water baies for instance but after all arlien one talks into a telephone one cannot see nor hear bear nor feel the electrical energy traveling along the wire to the other oilier party nevertheless when our friend at t tle other end of the line calls ais us leeral kinds of names for waking aking him up so early in the morning we a are re inclined to believe that something whatever it Is did travel along that little wire scientists tell us that this something Is 19 an electric current controlled by tile the voice of the speaker and we accept tile the scientists word for it and regard it no longer as a mys tey now lt it Is just as logical 10 to accept a c the sel scientists entis ts word for the existence of ra radio ho waves and to regard them as intimate friends rather than athani as mysterious st strangers after all many everyday every day expert edcel are due to waves or wave motions heat ineat light and X rays as well as radio are supposed to travel as waves sound Is known to be due to lb rations or waves a wave may be said to he simply a traveling vibrating motion in the air and other ma mater substances strike a key hey on your piano and with A ith your finger you c can a n feel fee the string vibrate as it sends out sound waves so the mechanism in ones telephone kelepi one transmitter picks up the sound and by means of it controls the strength of nn an electric current traveling over a wire and when this electric current reaches the receiving station it creates sound in tile the telephone receivers in a radio system on the other liand hand space Is 11 substituted for the be wires and radio waves for the elc electric current otherwise tile the action Is 13 the same |