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Magnets

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Δύο σφαιρικοί μαγνήτες. Μαγνητικό Πεδίο με σκόνη σιδήρου και περιστροφή λόγω έλξης. Two spherical magnets. Magnetic Field with iron powder and rotation due to attraction.
Gravitational Attraction - Black Holes:
music by: Kevin McLeod "Raw" (Royalty Free, 2011)
Gravitational Attraction - Black Holes:
music by: Kevin McLeod "Raw" (Royalty Free, 2011)