EN
This work is dedicated to the memory of the late professor Jacek Orzechowski, who pioneered the use of film methods in scientific research and university education. Professor Jacek Orzechowski has left behind a lifetime of research achievement. He was a man of wide horizons; deeply intellectual. He participated, as an expert, in the work of numerous committees and problem-solving teams. In 1989, Polish science and academia lost a great scientist of high authority. His sudden death at 66 brought a premature end to his intense life. May he rest in peace.