Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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luti forcipe conſtringatur, nempè ſupernè à columnis
aereis GA, lateralitèr à cylindris GH, & SD & infer­
nè à columnis aereis reflexis RVB, & SXI.
Dico ab ae­
reo oceano minimè guttam̨
121[Figure 121]
ABCD ſphæricè contornari.
Quia guttæ aqueæ partes AH
CD omninò carent vi motiua
qua ferantur versùs centrum
eiuſdem guttæ, eo quòd pars
eius ſuprema A trahitur ſur­
sum
à filo GA, inſima verò C
tendit deorsum vt grauis, ideò
duę partes oppoſitæ A & C
à ſe inuicem fugiunt, & proindè potius conantur
à centro ‘guttæ’ recedere, quàm ad ipſum ferri, &
cum eo vniri; partes verò collaterales H, & D ſiuę
vim grauitatis exerceant, ſiue non, nunquam tamen ho­
rizontali motu versùs guttæ centrum naturali inſtin­
ctu tendent, ergò ſi concipiatur centrum guttæ ABCD
ac ſi eſſet centrum ſy ſtematis elementaris partes gut­
tæ cenſeri poſſent non graues.
His poſitis intelliga­
tur ſuperaddita, vel eleuata eminentia, ſeu mammil­
la aquea H in laterali loco guttæ, tunc aereus ocea­
nus RS ne dum ſupernè ſuperficiem A, ſed etiam la­
tera eius H, D, & infimas facieculas B, C æquali ener­
gia comprimet, tum ratione grauitatis, cum ratione
virtutis elaſticæ eius.
Habemus igitur caſum ſimilem
ei qui in præcedenti propoſitione ſupponebatur, ſcili­
cèt gutta ABCD cuius partes non nituntur vniri, nec

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