Z. Ligeti: Neutrino oscillation and quantum entanglement K. É. Gabányi: Fast luminescence variations of quasars in the radio frequency band P. Varga: L. Jánossy's experiments -II. TEACHING PHYSICS I. Eichhardt, J. Jaloveczki: Numerical methods in students' circle work N. Juhász, G. Ősz, J. Vida: The final round of the XIXth Öveges József Students' Competition L. Holics, Cs. Sükösd: Experimental proof of the temperature dependence of sound's velocity OPINIONS A. Grandpierre: Astronomy and civilization - the importance of astronomy for the future of science and of the community of pedagogues BOOKS EVENTS