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Pyrotechnia, or, A discovrse of artificiall fire-works : in which the true grounds of that art are plainly and perspicuously laid downe : together with sundry such motions, both straight and circular, performed by the helpe of fire, as are not to be found in any other discourse of this kind, extant in any language : whereunto is annexed a short treatise of geometrie, contayning certaine definitions and problemes for the mensuration of superficies and sollids, with tables for the square root to 25000, and the cubick root to 10000 latus, wherein all roots under those numbers are extracted onely by ocular inspection (1635)

Babington, John, Droeshout, John, -1652 · London : Printed by Thomas Harper, for Ralph Mab · leaf 127

An illustration from Pyrotechnia, or, A discovrse of artificiall fire-works : in which the true grounds of that art are plainly and perspicuously laid downe : together with sundry such motions, both straight and circular, performed by the helpe of fire, as are not to be found in any other discourse of this kind, extant in any language : whereunto is annexed a short treatise of geometrie, contayning certaine definitions and problemes for the mensuration of superficies and sollids, with tables for the square root to 25000, and the cubick root to 10000 latus, wherein all roots under those numbers are extracted onely by ocular inspection, 1635, leaf 127
required. Prob. 45. Another way for working of tie fame , ON the length of the longeft fquare defcribe an arch t and let that line be the diameter of the fcmicircfe , then open your compafles to the letter fide , and fetting one foot of them at the end of the diame- tcr,with the other cut the arch,… … and fet it off from B to G , then draw the line A C which is the fide of the third fquare or remayner* which was required.

Fireworks · Geometry

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

More pictures from Pyrotechnia, or, A discovrse of artificiall fire-works : in which the true grounds of that art are plainly and perspicuously laid downe : together with sundry such motions, both straight and circular, performed by the helpe of fire, as are not to be found in any other discourse of this kind, extant in any language : whereunto is annexed a short treatise of geometrie, contayning certaine definitions and problemes for the mensuration of superficies and sollids, with tables for the square root to 25000, and the cubick root to 10000 latus, wherein all roots under those numbers are extracted onely by ocular inspection

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