Sul termometro a massimo ed a minimo di Rutherford

Viral Search algorithm

Un algoritmo genetico è un algoritmo euristico ispirato alla teoria darwinaiana dell’evoluzione ed ai concetti di selezione naturale ed evoluzione biologica. Gli algoritmi genetici permettono di valutare le soluzioni di partenza, ricombinarle ed, introducendo elementi di disordine, produrne di nuove convergendo, così, alla soluzione ottima. Nel corso degli ultimi decenni molti problemi concreti...

Di usion indu ed by grain boundaries : a SHE modelNaoufel

A 21 st century Rutherford experiment

In 1909, Hans Geiger and Ernest Marsden [1] reported on the strange behavior of α particles scattered by a gold foil. They observed a wide angular distribution that could not be explained by Thompson’s picture of an atom consisting of “a number N of negatively charged corpuscles, accompanied by an equal number of positive electricity uniformly distributed throughout a sphere” [2]. Ernest Ruther...

Massimo Pigliucci

The theory of evolution, which provides the conceptual framework for all modern research in organismal biology and informs research in molecular biology, has gone through several stages of expansion and refinement. Darwin and Wallace (1858) of course proposed the original idea, centering on the twin concepts of natural selection and common descent. Shortly thereafter, Wallace and August Weisman...

Rutherford Scattering

A great deal of what is known about the atomic nucleus has been deduced from the analysis of scattering experiments done with charged particles and neutrons. The first such experiments were performed with alpha particles from naturally radioactive substances, the counting of the scattered particles being done by visual observation of the scintillations (faint flashes of light) from a zinc sulfi...