Bošković, Ruđer Josip
,
Theoria philosophiae naturalis redacta ad unicam legem virium in natura existentium
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PARS SECUNDA.
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ſum mæ diſtantiarum punctorum jacentium ultra, demitur horum
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poſt eriorum punctorum ſumma itidem ducta in O, & </
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de exceſſui ſummæ citeriorum ſupra ſummam ulteriorum ac-
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cedit ſumma omnium punctorum harum duarum claſſium ducta
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in eandem O.</
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<
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pro plano po
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ſito ultra omnia
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puncta: eorum
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extenſio ad quæ
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vis plana.</
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jaceat ultra omnia puncta; </
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<
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">jam habebitur hoc theorema: </
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ma omnium diſtantiarum punctorum omnium ab eo plano œqua-
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bitur diſtantiœ planorum ductœ in omnium punctorum ſummam,
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& </
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<
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">ſi fuerint duo plana parallela ejuſmodi, ut alterum jaceat ul-
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tra omnia puncta, & </
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">ſumma omnium diſtantiarum ab ipſo œ-
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quetur diſtantiœ planorum ductœ in omnium punctorum nume-
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rum; </
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<
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">alterum illud planum erit planum diſtantiarum œqualium.
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</
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<
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">Id fane patet ex eo, quod jam ſecunda ſumma pertinens ad
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puncta ulteriora, quæ nulla ſunt, evaneſcat, & </
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ſit ſola prior ſumma. </
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<
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">Quin immo idem theorema habebit
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locum pro quovis plano habente etiam ulteriora puncta, ſi
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citeriorum diſtantiæ habeantur pro poſitivis, & </
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negativis; </
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tivis ſit ipſe exceſſus poſitivorum ſupra negativa; </
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<
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">quo quidem
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pacto licebit conſiderare planum diſtantiarum æqualium, ut
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planum, in quo ſumma omnium diſtantiarum ſit nulla, nega-
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tivis nimirum diſtantiis elidentibus poſitivas.</
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<
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inveniri poſſe
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parallelum pla.
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num diſtantia-
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rum æqualium.</
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ri aliquod planum parallelum, quod ſit planum diſtantiarum œ-
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qualium; </
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<
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">quin immo data poſitione punctorum, & </
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ipſo, facile id alterum definitur. </
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punctis datis rectas in data directione ad planum datum, quæ
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dabuntur: </
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<
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">tum a ſumma omnium, quæ jacent ex parte al-
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tera, demere ſummam omnium, ſi quæ ſunt, jacentium ex
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oppoſita, ac reſiduum dividere per numerum punctorum. </
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<
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">Ad
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eam diſtantiam ducto plano priori parallelo, id erit planum
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quæſitum diſtantiarum æqualium. </
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<
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">Patet autem admodum fa-
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cile & </
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<
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">illud ex eadem demonſtratione, & </
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<
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rioris problematis, dato cuivis plano non niſi unicum eſſe poſ-
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ſe planum diſtantiarum æqualium, quod quidem per ſe ſatis
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patet.</
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<
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cipuum ſi tria
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plana diſtantia-
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rum æqualium
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habeant uni-
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cum punctum
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commune; re-
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liqua omnia per
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id tranſeuntia
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erunt ejuſmodi.</
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progrediar ad demonſtrandum, haberi aliquod gravitatis cen-
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trum in quavis punctorum congerie, utcunque diſperſorum, & </
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in quotcunque maſſas ubicunque ſitas coaleſcentium. </
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<
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ope ſequentis theorematis: </
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<
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tria plana diſtantiarum œqualium ſe non in eadem communi ali-
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qua recta ſecantia; </
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<
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">omnia alia plana tranſeuntia per illud idem
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punctum erunt itidem diſtantiarum œqualium plana. </
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<
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in fig. </
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na GABH, XABY, ECDF, quæ omnia ſint plana di-
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ſtantiarum æqualium, ac ſit quodvis aliud planum KICL </
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