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Study for a lab-made Moire pattern-based thread counter

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (3)

The 32nd International Young Physicists' Tournament (IYPT), a physics competition for students in schools, settled up a problem for the Moire thread c......

Pedagogical tool to teach electromagnetic plane wave propagation in various media environments

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (4)

In the usual process of teaching students about the electromagnetic field, students often have difficulty in understanding the propagation process of ......

Influence of the adiabatic process on a quantum system demonstrated using the energy conservation principle

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (5)

The adiabatic process is an old topic, which does not excite energy transitions and entropy changes in quantum systems. For undergraduate students, th......

A geometric approach to the envelope of Coulomb orbits starting from a point in space

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (5)

The envelope of the orbits of particles released with the same speed but in different directions from a point in an attractive or repulsive Coulomb fi......

Elliptical orbit constraint of a small ring under the influence of gravity and sliding friction

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (3)

We investigate the constraint problem of a small ring on non-smooth elliptical orbits. The influence mechanism of the orbital shapes on the motion vel......

Theoretical and experimental study of the looping pendulum

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (4)

We investigate the looping pendulum phenomenon proposed by the International Young Physicists' tournament (IYPT) in 2019 with experiments and theoreti......

Non-Coulomb effect on the Timoshenko oscillation

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (5)

A Timoshenko oscillator consists of an object set into motion through two opposite frictions of its rotating cylindrical supports. Coulomb's law of fr......

The physical origin of Schrodinger equation

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (4)

Quantum mechanics is one of the basic theories of modern physics. Here, the famous Schrodinger equation and the differential operators representing me......

Naked-eye observations of visible spectra using a transmission-grating-based spectrometer

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (5)

Naked-eye observations of visible spectra using a transmission-grating-based spectrometer, with the spectral resolution of 0.2 nm @ 550 nm, are report......

Fraunhofer diffraction simulation of a vortex beam through any apertures

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (5)

A general Matlab program is designed to simulate the Fraunhofer diffraction patterns of a vortex beam through any apertures, which are usually used to......

Strategy on choice of layback spins in figure skating

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (2)

Spin is an important component of figure skating, one of the most elegant events in the Winter Olympic Games. It is always presented as an example of ......

Observing the polarization of cosmic-ray muons in student physics laboratory

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (3)

An undergraduate-level student experiment has been designed and implemented to measure the forward-backward asymmetry of the decay of the cosmic-ray m......

An approach to the magnetic field of a finite solenoid with a circular cross-section

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (3)

We present a simple approach, different from approaches in the literature, for calculating the magnetic field of a finite solenoid with a circular cro......

A modified trifilar pendulum for simultaneously determining the moment of inertia and the mass of an irregular object

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (1)

In college physics experiments, a pendulum is often applied to measure the moment of inertia (J) of a rigid body. In this paper, we demonstrate a trif......

Effective resistances of two-dimensional resistor networks

期刊: EUROPEAN JOURNAL OF PHYSICS, 2021; 42 (1)

We investigate the behavior of two-dimensional resistor networks, with finite sizes and different kinds (rectangular, hexagonal, and triangular) of la......

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