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ΑΑΤ με τα φεγγάρια του Δία
Μελέτη της απλής αρμονικής; ταλάντωσης με τα φεγγάρια του Δία. Τα φεγγάρια του Δία φαίνονται από τη γη να κάνουν ΑΑΤ.