A Quad Focus GridPix Gaseous Tracking Detector is under construction, to allow calibration and test beam measurements to validate the working principles of the (quad) GridPix detectors while using a focused electric field. The development is well on its way: both measurements should be able to be conducted …

Earth’s magnetic field, also known as the geomagnetic field, interacts with the solar wind, a stream of charged particles originating from the Sun. The interaction causes the geomagnetic field to undergo variations, called geomagnetic disturbances or geomagnetic activity. This bachelor thesis features …

Het gaan met een bovenbeenprothese is zwaar en ingewikkeld. Er wordt veel coördinatie en timing gevraagd van de prothesegebruiker. Omdat de beenspieren geen moment meer kunnen geven aan de knie, is het buigend moment rond de knie altijd een probleem voor de gebruiker. Dit verslag moet inzicht geven over …

Exposures to ionizing radiation frommedical examinations are on the rise. An important cause for this has been the advent and ever-increasing use of computed tomography (CT) scans for diagnostic purposes. It is often implied that population aging contributes significantly to this rise. Here, the trends …

Scanning tunneling microscopy is an important and enabling tool for condensed matter physics and surface science. The low temperature STM in Leiden (Prof. J. Van Ruitenbeek and Prof J. Aarts) is used for research in the field of atomic/molecular electronics and superconductivity. The current low temperature …

PURPOSE: Advanced radiotherapy treatments require appropriate quality assurance (QA) to verify 3D dose distributions. Moreover, increase in patient numbers demand efficient QA-methods. In this study, a time efficient method that combines model-based QA and measurement-based QA was developed; i.e., the …

Light pollution is one of the fastest growing and most pervasive of environmental pollution (Chepesiuk, 2009). In the last couple of years, a lot of research has been done about the effects of light pollution. The interest in light pollution has been growing in many fields of science, extending from …

De World Conference on Physics Education vond plaats in Istanbul van 1 – 6 juli met als thema The Role of Context, Culture,and Representations in Physics Teaching and Learning. Deze conferentie wordt eens in de vier jaar door de Europese, Aziatische, en Amerikaanse natuurkunde onderwijs organisaties …

In 1996 innovative, double major teacher education programs for Physics & Mathematics and Physics & Chemistry were initiated at the University of San Carlos in Cebu, Philippines. Both programs require 4 years of study. From the outset the focus was on making a difference in the quality of Science and …

The Pierre Auger group is studying ultra-high energy cosmic rays. Cosmic rays are charged particles which permanently hit and penetrate the atmosphere of the Earth. They will at a certain moment collide with nuclei in the atmosphere, like nitrogen. The results of such an interaction are new particles, …