. Popular electricity magazine in plain English. a employed it, itremained for Prof. Vanni tobring it to the present re-markable state of we make use of avery fine stream of waterfalling from a hole in thebottom of and thenconnect the vessel to a tele-phone membrane in theproper way. When we speakagainst the membrane itvibrates in the way withwhich we are familiar and theliquid stream also vibrates inthe same way. Such a vibrating liquid streamshows some very curious properties. The vibra-tion causes it to take the shape of separate dropswhich cannot be perceived
. Popular electricity magazine in plain English. a employed it, itremained for Prof. Vanni tobring it to the present re-markable state of we make use of avery fine stream of waterfalling from a hole in thebottom of and thenconnect the vessel to a tele-phone membrane in theproper way. When we speakagainst the membrane itvibrates in the way withwhich we are familiar and theliquid stream also vibrates inthe same way. Such a vibrating liquid streamshows some very curious properties. The vibra-tion causes it to take the shape of separate dropswhich cannot be perceived by the eye, as theypass too fast, but when properly photographedit is seen that each separate drop vibratesunderthe action of the voice, becomes flattened outand then takes its proper shape, keeping upthis trembling movement while it is falling. Vibrating MilkDrops M. Lansiaux took views of milk drops with amoving picture machine, a part of one film beingshown. It will be seen that the drops are quiteflattened out, then spring back to the usual. Taking Picture of Falling Drops shape. Part of the stream may remain straightand part of it separate into drops, according tothe way the stream is vibrating. This principleis used to make up the telephone transmitter,the details of which lie, however, outside of ourpresent space. JAPANESE SYSTEM OF WIRELESSTELEPHONY A Japanese, M. Torikato, has invented asystem of wireless telephony which, after a seriesof exhaustive experiments by the government,has been adopted upon all the ships of the description has as yet been given of the .appa-ratus, but as the inventor is taking out patents inFrance, details will undoubtedly be forthcomingin the near future. All that is known is that thesystem gives wireless communication within aradius of about 60 miles.—J. H. Blakey. COST OF WIRELESS VS. CABLE In comparing the cost of wireless with the costof cable, the cable between the United .Statesand Honolulu cost $20,000,000, while two wireles
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectelectri, bookyear1912
