# Optica νς΄.

Euclid, Optica, νς΄.. Ancient Greek.

Canonical: https://interlinea.aeterna-institute.org/library/greek/euclid/optica/%CE%BD%CF%82%CE%84.

Τὰ αὐξανόμενα τῶν μεγεθῶν δόξει προσάγεσθαι τῷ ὄμματι. ἔστω ὁρώμενον μέγεθος τὸ ΑΒ, ὄμμα δὲ ἔστω τὸ Γ, ἀφʼ οὗ προσπιπτέτωσαν ἀκτῖνες αἱ ΓΑ, ΓΒ. καὶ ηὐξήσθω τὸ ΒΑ καὶ ἔστω τὸ Β∠, καὶ προσπιπτέτω ἀκτὶς ἡ Γ∠. ἐπεὶ οὖν μείζων γωνία ἡ ὑπὸ ΒΓ∠ τῆς ὑπὸ ΒΓΑ, μεῖζον ἄρα φαίνεται τὸ Β∠ τοῦ ΒΑ. τὰ δὲ μείζονα ἑαυτῶν οἰόμενα ἐπαυξάνεσθαι δοκοῦσι, καὶ τὰ ἔγγιον τοῦ ὄμματος ἐλάττονα φαίνεται. τὰ ἄρα αὐξόμενα τῶν μεγεθῶν δόξει προσάγεσθαι τῷ ὄμματι.

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Euclid, Optica, ed. Johan Ludvig Heiberg, Heinrich Menge. Text: The Greek Library, from the Perseus Digital Library and other open sources, CC BY-SA 4.0. Changes: apostrophes normalised and the text divided into reading sections by Interlinea.
License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Source: https://thegreeklibrary.pages.lisn.upsaclay.fr/works/tlg1799.tlg009.local001/.