Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 555
531 TAN NOSTRAND'S ENGINEERING MAGAZINE. The resistance of the two wing surfaces DETERMINATION OF THE INTEGRAL, a = 20 '-**&)' /^/ STn 2 0 - Sin 2 (0 - a) d «. *<J a = 0 and substituting for <i t This integral may be found approxi- ttt o, y v o • 2 Sin20-Sin*(0-a» mately by construction. In Fig. 6… … circle I is described with radius Sin (ft ; and substituting for At from (4) II, with the radius unity. In the hatched right angled triangle the hypothenuse = 2? . ^.F1n126.12[8m20-Sin<2 (0-a) Sin (ft ; one side = a Sin ((ft — a) ; the —Q P = 9- other ti Cos (//> - a But since 'b = V Sin 2 0 — Sin…
Engineering
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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-341-233.webp)
