Fritts, Charles Edgar. [from old catalog] · Philadelphia, The Keystone · leaf 236
aspractical men everywhere, tacitly accept it as being unquestion-ably true. It will therefore be worth our while to examine itcarefully, so far as may be necessary to understand it. (542.) £>iagraj?i of a Phillips curve.—Fig. 27 is substantiallythe diagram given in his treatise. The circle… … Fig. 27. 224 THE WATCH ADJUSTERS MANUAL. drawn through the beginning of the curve, and ah is one throughits end. (543.) The conditiofis of the Phillips theory are: (i) that thecenter of gravity of the terminal curve be must fall upon a radiuswhich is at right angles to the radius passing through…
Clocks and watches
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-69-47.webp)
