Problems related to numerical resolution in on-line data acquisition are discussed and different smoothing techniques for data analysis are proposed. […]
In the study of subjects at the borderline between Thermodynamics and Mechanics, typical aspects of one of the two sciences are sometimes overlooked and incomplete, contradictory or partially erroneous descriptions are given. We find this type of difficulty in situations where there are objects in motion and, […]
Looking through a pitcher full of water reveals a surprising optical effect. […]
Among the first electrostatic machines, the one developed by Edward Nairne, a skilled English instrument maker of the second half of the eighteenth century, should be mentioned. This electrostatic generator is little known, however it was used in medical field for over a century. […]
Reasoning on what happens when connecting two charged capacitors suggests a general procedure for evaluating the energy associated with the propagation of electromagnetic waves. […]
We test experimentally the free electron gas model for electric conduction in metals by means of measurements of the Hall coefficient. Full details for the construction of the experimental apparatus are given. […]