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Holz, Christoph; Pusch, Alexander – Physics Education, 2020
Powerbanks differ in the amount of energy they can store. Usually this capacity (in a colloquial sense) of the powerbanks is stated in the form of charge in mAh for effective advertising. From a physical point of view, shouldn't the energy that a powerbank can provide be of interest? For students, charging smartphones with power banks is…
Descriptors: Power Technology, Energy, Physics, Computer Uses in Education
St. John, Stuart A. – Physics Education, 2017
Understanding Physics is a great end in itself, but is also crucial to keep pace with developments in modern technology. Wireless power transfer, known to many only as a means to charge electric toothbrushes, will soon be commonplace in charging phones, electric cars and implanted medical devices. This article outlines how to produce and use a…
Descriptors: Physics, Telecommunications, Power Technology, Electronic Equipment
Roberts, J. W. – Physics Education, 2018
Nuclear energy produces low carbon, safe and reliable electricity so is it now time for the UK to invest in this proven technology or are the misplaced perceptions regarding its safety, cost and the quantities of radioactive waste produced causing us to overlook nuclear as a major component of our electricity mix? This paper discusses these issues…
Descriptors: Nuclear Energy, Power Technology, Science and Society, Public Opinion
Aguilar, Horacio Munguía; Maldonado, Rigoberto Franco; Navarro, Luis Barba – Physics Education, 2017
Charging a capacitor with a photovoltaic module is an experiment which reveals a lot about the modules characteristics. It is customary to represent these characteristics with an equivalent circuit whose elements represent its physical parameters. The behavior of a photovoltaic module is very similar to that of a single cell but the electric…
Descriptors: Electromechanical Technology, Power Technology, Energy, Science Education
Harrison, Mark – Physics Education, 2017
Earth wires and fuses work together in UK mains circuits to keep users safe from electric shocks and are taught in many school contexts. The subject can be quite abstract and difficult for pupils to grasp, and a simple but visually clear and direct demonstration is described which would be easy for most physics departments to build and which can…
Descriptors: Demonstrations (Educational), Electronics, Energy Education, Power Technology
Straulino, S.; Cartacci, A. – Physics Education, 2014
The measurement of the force acting between two parallel, current-carrying wires is known as Ampère's experiment. A mechanical balance was historically employed to measure that force. We report a simple experiment based on an electronic precision balance that is useful in clearly showing students the existence of this interaction and how to…
Descriptors: Measurement Techniques, Physics, Motion, Energy
Mayer, V. V.; Varaksina, E. I. – Physics Education, 2014
Students receive a more complete conception of scientific cognition methods if they reproduce fundamentally important historical investigations on their own. Ohm's investigation realized in 1826 is one of these. This paper presents a simple and accessible experimental unit, in which Ohm's ideas are implemented with the help of modern…
Descriptors: Investigations, Science Education History, Science Experiments, Units of Study
Lara, V. O. M.; Amaral, D. F.; Faria, D.; Vieira, L. P. – Physics Education, 2014
We use a tablet to experimentally determine the dependencies of the magnetic field (B) on the electrical current and the axial distance from a coil (z). Our data shows good precision on the inverse cubic dependence of the magnetic field on the axial distance, B?z[superscript -3]. We obtain the value of air permeability µ[subscript air] with good…
Descriptors: Measurement Techniques, Magnets, Electronic Equipment, Physics