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Aguilar, Horacio Munguía; Maldonado, Rigoberto Franco; Navarro, Luis Barba – Physics Education, 2018
In hydrostatics, pressure measurement with U-gauges and their relationship to density is a well-known experiment. Very little is studied or experimented with the dynamics of the movement of a liquid in a U-tube probably due to its theoretical complexity but, after all, it is a simple damped oscillating system. In this paper we present a relatively…
Descriptors: Science Instruction, Physics, Science Experiments, Laboratory Experiments
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Wee, Loo Kang; Tan, Kim Kia; Leong, Tze Kwang; Tan, Ching – Physics Education, 2015
This paper reports the use of Tracker as a computer-based learning tool to support effective learning and teaching of "toss up" and free fall motion for beginning secondary three (15?year-old) students. The case study involved (N = 123) students from express pure physics classes at a mainstream school in Singapore. We used eight…
Descriptors: Computer Assisted Instruction, Motion, Physics, Scientific Concepts
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Vollmer, M. – Physics Education, 2009
Although mostly not perceived consciously, mirages are very familiar phenomena of everyday life. They can generally occur if light is incident on media with a gradient of refractive index. This article starts with the easiest mirage effect, known as astronomical refraction, then presents examples for inferior and superior multiple image mirages,…
Descriptors: Physics, Laboratory Experiments, Science Laboratories, Scientific Concepts
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Ibekwe, R. T.; Cullerne, J. P. – Physics Education, 2016
Under certain conditions a body of hot liquid may cool faster and freeze before a body of colder liquid, a phenomenon known as the Mpemba Effect. An initial difference in temperature of 3.2 °C enabled warmer water to reach 0 °C in 14% less time than colder water. Convection currents in the liquid generate a temperature gradient that causes more…
Descriptors: Science Instruction, Physics, Scientific Concepts, Thermodynamics
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Jaafar, Rosly; Nazihah Mat Daud, Anis; Ali, Shaharudin; Kadri Ayop, Shahrul – Physics Education, 2017
In this study we constructed a special three-in-one resonance tube for a harmonic series sound waves experiment. It is designed for three different experiments: both-open-end, one-closed-end and both-closed-end tubes. The resonance tube consists of a PVC conduit with a rectangular hole, rubber tube, plastic stopper with an embedded microphone and…
Descriptors: Physics, Science Instruction, Acoustics, Science Experiments
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Morton, N. – Physics Education, 1984
Describes the nature of gradient refractive index (GRIN) lenses, focusing on refraction in these materials, focal length of a thin Wood lens, and on manufacturing of such lenses. Indicates that GRIN lenses of small cross section are in limited production with applications suggested for optical communication and photocopying fields. (JN)
Descriptors: College Science, High Schools, Higher Education, Industry
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Brimicombe, M. W. – Physics Education, 1991
A macroscopic way of modeling hot air balloons using a Newtonian approach is presented. Misleading examples using a car tire and the concept of hot air rising are discussed. Pressure gradient changes in the atmosphere are used to explain how hot air balloons work. (KR)
Descriptors: Force, Higher Education, Mechanics (Physics), Misconceptions
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Brouwer, W.; Paranjape, B. V. – Physics Education, 1991
The forward force of water on a hose is calculated using only the pressure gradient, the radius and length of the hose. The misconception about recoil on the nozzle is discussed. Dissipation energy and the consequent heat generation in a fluid flow are also described. (KR)
Descriptors: College Science, Energy, Fluid Mechanics, Heat
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Grosu, I.; Baltag, O. – Physics Education, 1994
Describes an experiment that uses a bottle, a cork, and a wooden match to study students' explanations of what they observe to reveal misunderstandings about pressure and to produce some incorrect interpretations such as creation of a gradient of pressure. (DDR)
Descriptors: Concept Formation, Demonstrations (Science), Foreign Countries, Higher Education