Even with the addition of balance springs, there was still a lot of room for improvement.īy nature, pocket watches spent much of their time in one of two positions: either stored upright in a waistcoat pocket, or lying flat in the hand or on a table. Before the balance spring, energy from the mainspring was controlled only by the escapement. Working in concert with the escapement, the balance spring governs the release of energy stored in the mainspring to the time wheels. The balance spring acts like a pendulum does in a weight-driven clock to keep the gears moving at a metered pace. Pocket watch accuracy was greatly improved when the balance spring came along. Time is a Balancing Act Cutaway illustration of a pocket watch. The mainspring wasn’t the only problem plaguing pocket watches, but it was the among the most obvious. Worst of all, they would slow down throughout the day as the mainspring unwound, becoming useless unless wound several times a day. Early pieces were largely ornamental, and only told the hour. So pocket watches weren’t exactly an overnight success. That’s because the driving force of a tightly wound spring isn’t constant like that of an inert, solid weight.
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It wasn’t until the mainspring-driven movement came along that timekeeping could even begin to become portable.īut while the invention of the mainspring made portable timepieces possible, it hurt their accuracy. Clocks were driven by heavy weights that made them impractical for travel. And these days, it may be that atomic clocks are the only clocks that matter.īefore this modern era of quartz and atomic accuracy, though, timepieces were mechanical. That’s because cell networks are timed from satellites, which are in turn timed from atomic clocks. The time on your phone is about as accurate as chronometry gets these days. Do you know what time it is? Chances are good that you used a computer or a cell phone to answer that question.
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