TY JOUR TI Using empirical methods of perception in process of physical phenomenon concept making for students of engineering and technical specialities and directions KW cognitive tasks KW cognitive activity KW levels of cognition KW empiricism KW practical activity KW research work KW laboratory work JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Revina, A.. PY 2022 IS PB Astrakhan State Technical University