We safely remove the outer glass bulb from an incandescent lamp and burn up the tungsten filament after the glass is removed. This demonstration dramatically illustrates the necessity of a vacuum or inert gas for the environment surrounding the tungsten filament inside the bulb. Our approach has added historical importance since the incandescent…

Most physics educators would agree that energy is a very useful, albeit abstract topic. It is therefore important to use various methods to help the student internalize the concept of energy itself and its related ideas. These methods include using representations such as energy bar graphs, energy pie charts, or energy tracking diagrams.…

The September 2015 paper "Bouncing Back from 'Deflategate'" is a very interesting article from a physics viewpoint. However, we doubt that the National Football League (NFL) officials will bounce footballs and measure the coefficient of restitution to verify that the footballs remain properly inflated. The release of a few pounds per…

According to the principle of equivalence, it is impossible to distinguish between gravity and inertial forces that a noninertial observer experiences in his own frame of reference. For example, let's consider an elevator in space that is being accelerated in one direction. An observer inside it would feel as if there was gravity force pulling him…

An experiment with an electric transformer based on single coils shows how electromagnetic induction changes when the magnetic coupling between coils is adjusted. This transformer has two secondary outputs which are taken differentially. This is the basis for a widely used position transducer known as LVDT.

On July 19, 1969, Senator Edward Kennedy drove his vehicle off a low bridge on Chappaquiddick Island in Massachusetts. The vehicle sank in 2.1 m of water, coming to rest on its roof. According to Kennedy's version of events, he managed to escape from the submerged vehicle without injury, but his female companion, Mary Jo Kopechne, drowned without…

This investigation of physics teacher education in Ethiopia reveals a significant gap between the physics knowledge of pre-service teachers (PSTs) attained during training and that of the intended curriculum setting out expectations for their knowledge. Data were obtained by a test probing PSTs' physics knowledge (attained curriculum); analysis of…

This study explores the culture of physics departments in Sweden in relation to physics teacher education. The commitment of physics departments to teacher education is crucial for the quality of physics teacher education and the way in which physics lecturers talk about teacher education is significant, since it can affect trainees' physics…

The COVID-19 pandemic has greatly impacted every aspect of academic activity, including the informal education and public engagement efforts of physics departments and institutions. As part of a large-scale national survey of the landscape of informal physics education programs, we have conducted a series of short interviews with directors and…

This article is prepared as part of a "Practice Teaching in Science" course of a teacher education program aiming for developing prospective science teachers' teaching through inquiry-based instruction involving practices of science and active learning strategies. During the semester, student teachers are required to prepare four…

This study developed an online observable augmented reality dynamics experimental system that can be used in the current COVID-19 pandemic, where face-to-face experiments are difficult to conduct. The developed system enables the broadcast of mass point and rigid body measurements using an online depth camera, and remote observation using mobile…

As a method to shorten the test time of the Force Concept Inventory (FCI), we suggest the use of computerized adaptive testing (CAT). CAT is the process of administering a test on a computer, with items (i.e., questions) selected based upon the responses of the examinee to prior items. In so doing, the test length can be significantly shortened.…

Women continue to be underrepresented in physics in the United States. This is while many Muslim majority (MM) countries have a high representation of women in undergraduate and graduate physics programs. While there is a growing awareness of this trend, little is being done to understand why and how this trend has manifested and how it can be…

Although recent research has reported equity gains in the university-level physics classroom, there remains evidence of significant inequities by race. We conducted a series of multiple linear regressions to examine the magnitude of these inequities in introductory mechanics final exam scores. When we followed a common method of grouping students…

Background: Boredom during learning activities has the potential of impeding attention, motivation, learning and eventually achievement. Yet, research focusing on its possible antecedents seems to have received less attention especially within the physics domain. Based on assumptions of the Control Value Theory of Achievement Emotions (CVTAE),…