Lente convessa

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From: JTS <pireddag_at_outlook.it>
Date: Sat, 19 Feb 2022 06:20:59 -0800 (PST)

Prendete una lente convessa, di lunghezza focale 30/40 cm, e guardate attraverso, tenendola di fronte al volto ad una distanza comoda.

Cosa osservate? Perché?
Received on Sat Feb 19 2022 - 15:20:59 CET

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