Risultati della ricerca
Anno XXXVI - n.4 - ottobre/dicembre 2003 Medicina nucleare
This article describes the use of nuclear medicine techniques in diagnosis and therapy. The process of generating radiopharmaceuticals is introduced and relevant interactions of radiation with matter are discussed. Instrumentation in diagnostic nuclear medicine is described and future trends in nuclear medicine imaging technology are predicted. […]
Anno XXXVI - n.4 - ottobre/dicembre 2003 La fisica delle radiazioni e le sue applicazioni alla terapia medica
Radiation therapy is an example of the successful application of advanced physics to the treatment of human disease leading to improved quality of life and even cure for many patients. The German physicist William Roentgen (1845-1923), who discovered x-rays in 1895 and pioneered early x-ray applications, […]
Anno XXXVI - n.4 - ottobre/dicembre 2003 Immagini da risonanza magnetica nucleare in medicina
Over the past twenty years, magnetic resonance imaging (MRI) has become one of the most important imaging modalities available to clinical medicine. It offers great technical flexibility, and is free of the hazards associated with ionizing radiation. In addition to its role as a routine imaging technique with a growing range of clinical applications, […]
Anno XXXVI - n.3 - luglio/settembre 2003 Un progetto di introduzione della meccanica quantistica per i laureati in matematica
The article presents the general lines of a project on quantum mechanics developed for a 32-hour course in the context of pre-service training of Secondary School Teachers in mathematics & physics. The students had a degree in Mathematics and had never met quantum mechanics before. […]
Anno XXXVI - n.3 - luglio/settembre 2003 Una macchina elettrostatica… statica!
An E.H.T. generator which may be used in all experiments and demonstrations instead of the old fashioned electrostatic machines is described. It has none of the drawbacks of the old machines and its design gives special attention to the safety of the operator. […]
Anno XXXVI - n.3 - luglio/settembre 2003 C’è del gas all’interno di una lampadina?
Students at their last year in high-school measure the temperature in different points of a lighted incandescent lamp bulb oriented in different directions and always find the highest temperature at the top. When asked why, their answers reveal interesting patterns of reasoning: heat goes up (without further explanation); […]
Anno XXXVI - n.3 - luglio/settembre 2003 Misurare la velocità tramite l’effetto Doppler
Velocities are measured through the interference of waves of slightly different frequencies due to the Doppler effect. The experiment is performed with mechanical (ultrasound) and electromagnetic (laser light) waves. The ultrasound results are compared with velocities measured in an independent way. […]
Anno XXXVI - n.2 - aprile/giugno 2003 Ancora sulle derivate del seno e del coseno (calcolate in maniera elementare)
The article shows how the derivatives of the trigonometric functions sine and cosine can be calculated with simple but rigorous geometrical reasoning. […]
Anno XXXVI - n.2 - aprile/giugno 2003 Un’applicazione di fisica atomica in un esercizio su uno dei metodi impiegati per scoprire l’impatto di un meteorite
Locating the sites of major meteoritic impacts implies using knowledge from a number of sciences: nuclear physics, astronomy, geology, mineralogy and chemistry. The article proposes a simplified version of the complex scientific as an exercise in nuclear physics. […]