. Time and its measurement . - and im-entions it is of yester-dav. Strictly speaking, as we use theword clock, its age from De Vick tothe modern astronomical is onlv about 42 TIME AND ITS MEASUREMENT 540 vears. If we take the vear 1600, we find tlir t it represents the eenter of. FiK. 33—Antique Clock, Entirely Hand-Made modeiH iniprdvenients in eloci<s, a fewyears Ijefiire and after that chite in-cludes the ]ienduhim, the anchor anddead beat escapements, the minute andsecond hands, tlie circular balance andthe hair spring, along with minijr im-provements. Since the end of thatperiod, which
. Time and its measurement . - and im-entions it is of yester-dav. Strictly speaking, as we use theword clock, its age from De Vick tothe modern astronomical is onlv about 42 TIME AND ITS MEASUREMENT 540 vears. If we take the vear 1600, we find tlir t it represents the eenter of. FiK. 33—Antique Clock, Entirely Hand-Made modeiH iniprdvenients in eloci<s, a fewyears Ijefiire and after that chite in-cludes the ]ienduhim, the anchor anddead beat escapements, the minute andsecond hands, tlie circular balance andthe hair spring, along with minijr im-provements. Since the end of thatperiod, which we may make l^OO, nofundamental invention has been atldedto clocks and watches. This becomesimpressive when we remember thatthe last 200 years have produced moreinventions than all previous knownhistory—but onl} minor improvements in clocks ! The application of electric-ity for winding, driving, or regulatingclocks is not fundamental, for the time-keeping is done b}^ the master clock\\ith its pendulum and wheels, just asby any grandfathers clock SOO yearsI lid. This broad sur^•ey of time meas-uring does not permit us to go intominute mechanical details. Those\\isliing to follow up the subject v,-onldre(|uire a large horological library—and Dr. Eliots five-foot sh
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Keywords: ., boo, bookcentury1900, bookdecade1900, booksubjectclocksandwatches
