A. Farkas: Halo phenomena, optical indicators of high altitude cloud states L. Szepes: Chemical bond studies based on gas phase photoelectron spectroscopy A. Patkós: Quark research of "Puskin Street" (Eötvös University) - II. G. Palló: The M. Polányi vs. Einstein dispute on adsorption TEACHING PHYSICS S. Zátonyi: Examples and exercises taken from practice to be used in primary school physics teaching M. Jendrék: Spectacular demonstration experiments with pointer measuring instruments I. Hargittai: E. Teller's merits as the author of safety regulations for large industrial establishments EVENTS L. Tapasztó: The 2010 Nobel prize F. Iglói: J. Sólyom: 70th birthday greetings