Γιατί διαδίδεται το φως και όχι ο ήχος στο κενό;

admin 17/09/2017

/ εκπαίδευση διάδοση, ήχος, κενό, φως

Γιατί διαδίδεται το φως και όχι ο ήχος στο κενό;

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