Ľubomír Held's scientific contributions

Citations

... Many researchers f. e. Clement (1978), Watts, Gilbert (1983), Duit (1984Duit ( , 1981, Kesidou, Duit (1993), Trumper, Gorsky (1993), Trumper (1993, 1998), Legget (2003, Kuhnová, Held (2010), etc… have noted students´ lack of differentiation between energy and other physical term, especially the force and work. stated that the force is confused likes energy. ...