The European culture at the turn of the century developed a deep criticism of the concept of “natural laws”. In the meantime, the new concept of “statistical law” was found to be useful and fruitful. The paper proposes a review of the positions on this issue of the physicists and philosophers like Boltzmann, […]
The article discusses, with many examples, the difference between the universal meaning of physical laws (e.g. proportionalities between physical quantities) and their customary computable representations. These require introducing auxiliary quantities and coefficients whose physical definitions and numerical values depend on the unit system chosen. […]
The work describes a series of simple experiments done by thirteen year old students It included the construction of a kaleidoscope and other experiments on geometrical optics. […]