Dealing with a new physical subject one often goes on too hastily in the initial stage, leaving some uncertainties and ambiguities in definitions and in basic features. Furthermore one performs schematizations and simplifications which may be in contradiction with fundamental principles or experimental results. […]
In ancient times, the interest in colour and related techniques involved almost exclusively artists, decorators, fabric dyers, professionals who needed clear recipes to obtain the desired effects in their works, or philosophers and thinkers, because of the symbolic and religious meanings of colours. […]
The term “nanoscience” is explained and illustrated by examples that can help to understand its scope and its importance for everyday life. […]
A ‘physically consistent’ way of explaining tides to secondary school pupils is suggested and described. […]