A brief analysis of meteorites and their effects on earth is given. In particular, the paper focuses on the relationship between the energy of a meteorite fallen on the earth and the width of the crater. The reader will find a very simple experiment that simulates the fall of a meteorite and allows to measure energy and the diameter of the crater. […]
The OPERA experiment, based on the observation of about 16000 neutrino events measured at Gran Sasso, seems to indicate that the neutrinos travelled at 25 parts per million above the speed of light. The article describes some details of the procedure for measuring the neutrinos’ […]
In Russia there’s an old and consolidated tradition associated with Physics problems and exercises for students, as the very famous section “Zadaci po Matematike i Fizike” (“Mathematics and Physics problems”) of “Kvant” magazine shows. This article presents all the problems on various school levels that were assigned during the 28th Russian Olympiads for Physics (1994), […]