Newton's principia, first book sections I, II, III, with notes and illustrations and a collection of problems, principally intended as examples of Newton's methods (1900)
se of the angle of contact of an arc Is astraight line drawn from one extremity of the arc to meet, ata finite angle, the tangent to the arc at the other extremity. This subtense is the secant which defines the limited linecalled, in the Lemma, the tangent. The cherd is called by Newton the… … LEMMA yii. 5D and ADB being then both small, the ulthnate ratio of thechord to the tangent might be any finite ratio instead ofbeing one of equality, This is the only limitation of the motion of BD i the figiirorepresenting changes which may take place in the approachtowards the ultimate state of…
Mechanics · Celestial mechanics
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