edi&o angulo inclinarionis immediate in vitrum prolapfo» PROPOSITIO X. Radii lucis exuno in almdquodcunque dtverfum diaphannm quocunque anguhin-cidentis, licetfiat refracJioi pars tamen altqua refleclitur ^& quidemfervata aqualttateAngulorum imidentU & reflextonis. Sic ex. grar.… … mo nc* (
Optics, Geometrical · Optical instruments
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