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# Title: Erhardi Weigelii Sacrae Caesar. Maiest. ut & Com. Pal. Sultzb. Consiliarii, Supr. Artium Archit. Directoris Saxo Ien. Mathemat. PP. totius Academiae Senioris, Philosophia Mathematica (shelfmarks Leibn. Marg. 65; ZEN Leibn. Marg. 65)
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iTC
SCTTA LFEFeTUUM
cerrum nilum imprimit. uc animal specialimo-
do sentiac, qua sensacio vocatur VISIO: COr-
vus parcicularum, quae vertisine sua moium
humc exciane, dicitur Lucidum: ipla Pacultas
mocrix h. c. nisus in illis particulis dicitur Luxe
Nlocio in aechere vel aere per nilum illum exci-
eata dicitur Lumen: Linca recta L. c. serres par-
tium vocatur Radius: de quibus omnibus spe-
cialiter in Optica
SCTTUIM XVI
Si Duidum non parciculacim à vertigne cras
liorum molecularum seortim asitatarum, sed
curmatim ab impulsu crasliorum ut sibi con
tiouarum simul promotarum vetrementius,
quam Duidi mocus ordinaris est, percucia-
tur, h. C. s Corpus crassrus, vel prole, vel
cum alio collidatur in Duido; impetus im-
primitur Auido, qui continns undularioni
bus Aindi circa percurientia seu collila cor-
pora quaquarertum excurrI.
Demonstratio
Ouia, dum Corpus crassius Auidi turmam
mulaliquorsum impellit, per hypochetin iptum
Ruidum impullui relistens durance pulsu jam
ad latera declinat, cessante jam in oppoticum
versit, ec utrisque moribus hinc inde recipron
Catur, Per Scit. B. Q. F D.
Scholion.
Notus undulatorius xcheris aut aeris d
COlitione (nO d Vextisime Vel attricione) pro.
ductus,
1