. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature . ?Morse ink-writer, one-fourthfull size. ing instrument soonof the armaturefatiguing method of. ^10. 10.—Morse sounder, une-foiirtliftallsiz^ 120 TELEGRAPH vo«r« tine against an anvil or screw V(&g. 16) in such a way aa to give a dis-<iatt and somewhat loud sound. Dots and dashes are distinguished?by the interval between the sounds of the instrument in preciselythe same way as they are distinguished when reading from therecorder by sound. The form of sounder commonly used in Englandis shown in fig. 16
. The Encyclopaedia Britannica; ... A dictionary of arts, sciences and general literature . ?Morse ink-writer, one-fourthfull size. ing instrument soonof the armaturefatiguing method of. ^10. 10.—Morse sounder, une-foiirtliftallsiz^ 120 TELEGRAPH vo«r« tine against an anvil or screw V(&g. 16) in such a way aa to give a dis-<iatt and somewhat loud sound. Dots and dashes are distinguished?by the interval between the sounds of the instrument in preciselythe same way as they are distinguished when reading from therecorder by sound. The form of sounder commonly used in Englandis shown in fig. 16; it is one of the simplest possible instruments,is easily adjusted to the current by tightening or slackening thespring s, and is very little liable to get out of Another and in some respects a simpler method o? recording isto use a chemically prepared ribbon of paper. Suppose, for in-stance, the paper ribbon to be soaked in a solution of iodide ofpotassium and a light contact spring made to press continu-ously on its surface as it is puUed forward by the , if a current is sent from the spring to the roller through thepaper, a brown mark will be m
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Keywords: ., bookcentury1900, bookdecade1900, bookidencyclopaedi, bookyear1902
