Ballistica et acontismologia. In qua sagittarum, jaculorum, et aliorum missilium jactus, et robur arcuum explicantur / [Marin Mersenne].
- Marin Mersenne
- Date:
- 1644
Licence: Public Domain Mark
Credit: Ballistica et acontismologia. In qua sagittarum, jaculorum, et aliorum missilium jactus, et robur arcuum explicantur / [Marin Mersenne]. Source: Wellcome Collection.
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![a ————_— BA LLTSDI ON COROLLARIVM Res igitur homines ex B montis , vel turris apice corpus ‘JL aliquod horizontaliter proïjcientes, quorum primus ad pun- ] CRM furam ex lineis KB, À B & LB metientur. SECVNDA PARS PROPOSITIONIS. quà telum emittitur velocitate, iaétus horizontalis longitudi- qua Jinea horizontali C F-duéta, C L perpen- dicularis eleuationem fuperhorizontem CB, vtantea, & lineam BK datæ velocitatis pro- duétricem compleétatur, has enim inter me. diæ proportionalis dupla horizontalem explo. fionem tribuet. Verbi gratià BG, eft media proportionalis inter C B & BK, quare du- PR BG, hoc eft CD , dabit ia@um quæfi- tum ex velocitate acquifitâ per defcenfum cha KB. Similiter BH eft media proportionalis inter C B, BA, & BI eft media prop. inter CB, & BL. Vnde conftat vius, & vtilitas ingensmediæ proportionalis, quæ poftre- mæ parti propofitionis, quémadmodum tertia proportionalis prio- quanto iactus horizonrtalis ex alia maiore , Vel minore fuper hori- zontem aftitudine maior, vel minor futurus fit, quandoquidem iaétus., feu explofiones per eandem lineam, fiue horizontalem . fiue cuiufuis altertus fuper horizontem eleuationis,fola verticaliexcepta, quæ ii eadem eft, funt in ratione eleuationum fuperhorizon- icata, vel fubduplicata : fed de his poftea fufids. | ? S PAR NRC TE | PR ee 3 - RUN us ie S à Du EL - RSR SRE LS M Re TER RE Re](https://iiif.wellcomecollection.org/image/b33478995_0089.jp2/full/800%2C/0/default.jpg)
