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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica (shelfmarks Leibn. Marg. 100:1/2, Stück 1; Leibn. Marg. 100:1/2)
# Folio 695, page id 851387705:0715
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ress
PrOB. ZI. DeCalculo Centri Ciravitatis.
descripea, (cujus Caltem magnitudo nota AC) diftorentia, prout aele
(Seu planorum intersectio) propius auc remocins ablE.
Aut etiam duclentia momentorum ejusdem sravis; Prout Axis MO.
tus propius absic aue remotius.
Hinc speciatim habetur etiam Frilinei vel Polrsoni oujutris, in su-
perticie Cxlindrica deseripti (planis utcunque positis corminati)
masnitudo. Ouod et de aliis corporum Prilmaticorum Superticie.
Dus tixurisque iildem sic inseripris, intellisendum:
Ncellisacur basis plana B D, (rectilinea, curvilinea, an n_a gualIbCF; ) iguia A.
c
d
(polico oculo n Cocem pralio del intinitam diltantiam) proscracur in BD IC. F18. 136.
ctam: Cacleoque et huse paraltela plana quaeliber, in pardetas rectas projecta:)
3
incelligatur, quo sensu del. 7. Cap. 4. detinivimus;) B DdB; luque lupor palis
Cencro sravicaris C, (quod provius remociutro a B vel D intellisendum exit
prouc Balis tixura d licus poltularerit,) erecta Cc, ipsis Bb, D. a laceribue, pa
Fallela. Incellisacur vero Colidum hoc Pxilmacleum, alio achuc plano ad planum
halis oblique inclinato sectum; quod sectionem taciat, Bn s: rasta Cs, OcCurrenS
in u. Dico; tructum BDs e, aequale esse Solido Prismarico suver, cadem, bale
(ret huic aequali; propier aequalia Prilmaca, et Cslindros, quae sune super aquali
bus balibus aeque alta:) alcicudinem habenti cam quae elt rectae Cu; (nempe, huic
rectae aequalem, si Cn lit ad batin perpendicutaris; vel lalrem, aequalem perpendi
culari a puncto n camuta ad planum balis BD.)
Incelligatur urique Planorum BD, BS, communis seclio Z recta; quae in nni
cum Z punctum projiciatur; adeoque ee huic parallela rectae, in toridem puncta,
Perque rectam Z incedat Planum ZP, plaHO X BD rectum: quod in X P rectand
Projiciatur. (Ouam projectionis tormam eo tine adhibemus, quem ad prop. 14
Cap. 4. intinuarimus; quo et phancasia plurium linearum contusione leretur ne
que curbentur interim rationes: Ouippe cancundem d plano X P distabunt lingula
Solidi Duricta; acque, ab X P recta, cactem in plano projecta distane.
Ponatur POrrO; Planum ZBD, planum Horirontale; recta X, ad IB MOIUS;
Super qua Erieace corpus Prismacicum quodvio (pucqe Colitiaruo, si basis olta
Tic circulus; S rectilinea, Prisma Fnelideum; lalcem, Solidum aliquod Prisinati
cum seu Columnare, quod ex intinicis numero rectis paraslelis aequatibus constari
tocidem ipli X C aequales.
Sed e (propter Timilia Friangula;) iccllo AB, XC, XB, dC. PlOPO
adeoque Planum ZP, perpendiculare Plauum per motus axem. Adeoque in ea
ratione Ponderane Lingula Balis puncta B, C, D, dec. qua dictant ab axe mocuS L,
vel a perpendiculari per hunc Plano ZP; ver 4 C ap. 4. Hloc est, in ratione re
ctarum ZB, XC, ZD, ec. SCCI GravitaciS) cancundent
Timul omnia ponderant, acque si in C. puncto intellisereneur omnia: pet 26 C ap. 4
Adeoque (per 4 Cap. 4.) tancundem lunc limul omnes ZB, Z C, ZD, dcc. aique
les Tunt BB, C nn DS, ec. Adeoque (per 12 L L. 5.) cancundem sunE Simul Om-
nes BB, Cinus B, CC. (Acum BDSB complences, ) acque cotidem Cn (cotti.
Plentes