Guilelmi Oughtred ... Opuscula mathematica hactenus inedita / [William Oughtred].

  • William Oughtred
Date:
1677
Catalogue details

Licence: Public Domain Mark

Credit: Guilelmi Oughtred ... Opuscula mathematica hactenus inedita / [William Oughtred]. Source: Wellcome Collection.

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    Miecbanica. 3 Prop. XVII. Si fingulis dua- i| rum trochlearum orbiculis , qua- S | rum altera fuperne à potentia in ! S fuftentata, altera inferne alligata fuerit, circumducatur funiculus cu- jus unum extremum fuperiori tro- chlez religatur , ex altero pondus | appendatur: Erit potentia pondus t | futtinens ipfius ponderis multiplex, | denominatione compofita ex unitate | & totidem binariis quot funt in | trochlea fuperiori orbiculi. hoc eít, fi unus fit orbiculus, tripla; fi duo, 4| quintupla ; fi tres (nt orbiculi , i] fextupla, &c. In fchemate ratio potentie in S ad pondus P tripla. Nam íi due effent potentie pondus P fufü- «| nentes, una in A, altere in B, erunt utraque il.4 fimul tripla ponderis P. potentia enim in B eft .&] equalis ponderi P, & potentia in A ipfius du. «f pla. at potentia in S eft utrique zqualis quia fo- ; la pondus fuftinet. Ergo. Aliter c. Diametri orbiculorum BAC FML, funt tanquam vectes horizonti equidiftantes. Ft quia in vecte FML fulcimentum eft M, funiculi FN LC equaliter tenduntur. Et quia in vecte ! BAC fulcimentum eft A funiculi BP NF CL a- |qualiter tenduntur à potentia in S, hifce autem tenfio-
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