Antonia Karalexidou

Antonia Karalexidou

Περνάμε τις ζωές μας αναζητώντας την ευτυχία. Μερικές φορές την αναζητάμε τόσο επίμονα που ξεχνάμε να είμαστε ευτυχισμένοι.
Antonia Karalexidou
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Experiments with the 4 forces of flight

“What makes aeroplanes fly?” asked a few weeks ago. We’ve had fun finding out. An aircraft flying in steady forward motion is subject to four forces: thrust, drag, lift and weight. Aviation f