14-16: The History of Helicopter

Vasilios Apostoloudas, Experimental School of University of Macedonia Thessaloniki, Greece

14-16: Reaction Engine

Elena Mihaela Vrabie, “Ion Creanga” National College Brasov, Romania

14-16: The camera

Aimilia Ioakeimidou, Experimental School of University of Macedonia Thessaloniki, Greece

Editorials: Editorial 1-2013

Nikolaos Chatzarakis, Physics Dept., Aristotle University of Thessaloniki, Greece

General: Abacus History, Evolution and Actuality

Roșca Mioara Eugenia, Technological High School “Dr. Ioan Senchea” and “Ovid Densusianu”, Făgăraș, România

General: Strange things about scientists

Athanasios Papias, Experimental School of University of Macedonia, Thessaloniki, Greece

News: Nanopoulos Dimitrios and his ten dimensions

Olga-Rafaella Apostolouda, Experimental School of University of Macedonia, Thessaloniki, Greece

University: Impact of the industrial robots in human life

Flavius Bejan, Transilvania University of Brasov Brasovi, Romania