From 1775 to 1826 Ohm’s Law was gradually approached through the investigations of many researchers, stating with Cavendish. This article discusses the main experiments and the evolution of the underlying ideas, among which the concept of internal resistance of electrical generators eventually proved itself essential to Ohm’s discovery. […]
The actors on the stage of science after Newton’s age could be divided into two groups: the so called “geometers” involved in improving mechanics and gravitation from a mathematical point of view, and the “physicists” more interested in investigating subjects like magnetism, […]
In this controversy regarding the theory of colours, Goethe proposes a re-examination of some historical experiments in order to deny Newton’s ideas on the differentiated refraction of the various colours. Goethe analyzes Newton’s statements, step by step in order to criticize them. […]
When interpreting experimental results, context is everything. The researchers who took and analyzed the most important eclipse data had good reasons for judging the experiment a victory for Albert Einstein. […]
The debate on the correctness of the 1919 eclipse experiment is still in progress. This paper aims to contribute by analyzing the available data on the instruments, the achievable accuracy versus what would have been necessary and some experimental details not currently available in the relevant literature. […]
This research intended to analyse Einstein’s paper on granular structure of radiation, more by the light of Einstein’s later writings. The following topics will be discussed the reasons for his quantum theory’s formulation and the connection between Planck’s radiation theory and Einstein’s ideas. […]
This work reports the Italian translation of some parts of the English version of the paper that Alfred Wegener – best known for the continental drift theory – published in 1921 on “The origin of lunar craters”. One of the Moon craters is now named after Wegener. […]
In the 17th century De Dominis, Galilei and Newton proposed three different theories on the tides. Eventually Newton’s theory, some aspects of which recall the other two, was adopted. This paper proposes a school activity in which the three theories are compared. […]