ما يقوله الناس - كتابة مراجعة
لم نعثر على أي مراجعات في الأماكن المعتادة.
طبعات أخرى - عرض جميع المقتطفات
alſo altitude Analyſis anſwered arch auxiliary ſpring axis becauſe biſecting caſe centre chord circumference circumſcribing cofine Conſ conſequently conſtrućt coſine cube curve demonſtration deſcribe diameter diff direétion diſtance draw drawn eaſily ellipſis equal equation expreſſion fides firſt fluent fluxion force frićtion fruſtum given by poſition given point given ratio greateſt hence hyperbola inſcribed circle interfect James Cunliffe join leſs Lowry meeting the circle Meſſrs muſt obſerved parabola parallel paſs paſſes perpendicular plane preſſure Prob Prop propoſer propoſition queſtion radius reët reëtangle repreſent reſpectively right angles right lines ſaid ſame ratio ſecond ſegment ſemiarc ſemicircle ſhall ſhewn ſides ſimilar Simpſon ſince ſolid whoſe baſe ſolution ſome ſpace ſphere ſquare ſtraight line ſuch ſum ſun's ſuppoſe ſurface Swale tangent theref theſe triangle uſe velocity veſſel weight whence
الصفحة 114 - ... occurred to them. 3. THE next thing to be mentioned, is alfo a matter of arbitrary arrangement, but one in which the Brahmins follow a method peculiar to themfelves. They exprefs the radius of the circle in parts of the circumference, and, fuppofe it equal to 3438 minutes, or 6oths of a degree. In this they are quite fingular. PTOLEMY, and the Greek mathematicians, after dividing the circumference, as we have already described...
الصفحة 207 - Wd (tn—f} : ^n~t) D, where the letters exprefs the fame things as before, and the upper fign is for the moving, and the lower for the fufpending force. NB t is the natural tangent of the angle made by a line touching one of the threads, and a plane at right angles to the axis of the fcrew; or it is equal to the diftance of the refpe£tive edges of two threads, divided by the circumference of (Jie cylinder, out of which the fcrew is cut.
الصفحة 205 - MB or the fluxion of y is to Mm the fluxion of the curve, as MR or PN to RF or PQ, therefore if PN be a function of AP, PQ will be a fourth proportional to the fluxion of the ordinate, the fluxion of the curve AM, and this function ; wherefore if the curves HN and AM be given, the nature of the curve GQ will be known, and its area may be found by the common methods of quadratures. Corollary 2. It is evident that when...
الصفحة 208 - It has been already obferved, that a force afting perpendicular to the direction of a body in motion, does not alter the body's motion in that direction ; therefore if* we fuppofe DB to be an upright cylinder, and AB a body touching it in a line as in the figure, and retained clofe to it by an imaginary force, drawing it perpendicular towards the axis ; then if a force CP be applied to C, the center of gravity of AB, and be always fuppofed to...
الصفحة 115 - Thefe terms feem all to be derived from the \vordjya, which fignifies the chord of an arch, from which the> name of the radius, or fine of 90", viz.
الصفحة 116 - ... on, of that arch. The rule, when the fine of an arch is given, to find that of half the arch, is precifely the fame with our own : " The fine of an arch being given, find the co-fine, and thence the verfed fine, of the fame arch : then multiply half the radius into the verfed fine, and the fquare root of the produdl is the fine of half the given arch.