A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 12
order to the perusal of which,with profit and advantage, it will be requisite that the readershould not be ignorant of the names and general properties ofgeometrical lines and figures. The following diagram and ex-planatory observations are therefore introduced, as they may beuseful to those who… … A a Circle.A a its Diameter.B the Radius.C a Chord.D an Arc.E a Tangent.F a Secant.G a Co-tangent.H the Sine of Arc a b.I the Co-sine.K the Versed Sine.L the Sine of complemental Arc b c. 2. Every circle is supposed to be divided into 360 degrees,and the line which bounds the circle, and on which…
Physics
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![An illustration from Vnderweysung der Messung : mit dem Zirkel vn[d] Richtscheyt in Linien, Ebnen vnnd gantzen Corporen (1525)](https://img.insideoutlibrary.com/img/200/ia-vnderweysungderm00drer-164-408.webp)
![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-62-38.webp)