The Institute of Physics ( IOP ) по журналам "European Journal of Physics"
Отображаемые элементы 2140 из 1313

(19990101)Recently SalehJahromi and Moebs (1998 Eur. J. Phys. 19 355) presented an interesting set of calculations on twoelectron (He, , ) and threeelectron (Li, , ) species suitable for undergraduate quantum mechanics courses. ...

(19920901)In the description of multielectron atoms, the Hartree treatment provides oneelectron wavefunctions satisfying oneelectron Schrodinger equations. It is a common mistake in textbooks to regard the sum of the corresponding ...

(19970901)A useful methodology to study lattice dynamics is presented in this paper. Our method is based on the analogous behaviour of electromagnetic waves in transmission lines. The parameters analysed include the optical and ...

(19910101)A new pendulum setup is presented to be used for educational purposes. The system is made of special but simple mechanics and of a microcomputerbased interface capable of highspeed sampling of the pendulum angular ...

(19871001)A description is given of a computerinterfaced apparatus to measure the temperature dependence of the electrical resistivity of a semiconductor doped with shallowlevel impurities.

(19870401)The authors describe a computer simulation of the Ising model of magnetism designed to be used as a teaching laboratory 'experiment' for physics undergraduates. The description emphasises the physical 'measurements' that ...

(19881001)A conceptual introduction to the KaluzaKlein approach to a geometrical unification of gravity and other interactions is presented. After some considerations on the structure of theories of fundamental forces, and having ...

(19910301)When gas bubbles are injected into a liquid, their behaviour can be markedly different from the single, isolated, spherical oscillating bubble, since shape oscillations can distort the bubble. In addition, the process of ...

(19890101)The principle of action and reaction (PAR) is often presented in a way that neglects the possible role played by the intermediate field of the interaction. Now this field is endowed with momentum as well as energy and ...

(19940501)It is well known that, in special relativity, Newton's third law does not hold in general. This paper presents its generalization and the relativistically valid model in which the generalized law is supposed to hold. Also ...

(19910301)A mechanical oscillator has been constructed for which the restoring force is closely proportional to the cube of the displacement. The simple air track system allows the properties of this nonlinear oscillator to be ...

(19810101)The classical analogue of the quantal timedependent Green function for particles in a uniform magnetic field is the family of helical trajectories of particles emitted from a point source isotropically and with the same ...

(19870701)A lowtemperature calorimeter is described and used for experiments on the phase transition of a superconductor in a magnetic field. An experimental arrangement was developed for a demonstration during a lecture hour. It ...

(19990301)Damped oscillatory motion is one of the most widely studied movements in physics courses. Despite this fact, dry damped oscillatory motion is not commonly discussed in physics textbooks. In this work, we discuss the dry ...

(19810701)A derivation of the Landau damping from the Vlasov equation is made by using the Fourier representation of the delta function. A comparatively short derivation for a general background distribution function is obtained.

(19960301)A detailed macroscopic description as in continuum mechanics, and just the concept of microstate, have been used to derive thermodynamics from mechanics. In opposition to statistical physics, the derivation lays emphasis ...

(19880401)

(19871001)A threefold coincidence arrangement of two scintillation counters and an optical Cerenkov counter was used to form a cosmicray muon momentum selection system of 0.21 sr cm2 aperture. The variation of pressure of the ...

(19820401)Experiments are described which demonstrate the basic ideas of paramagnetism and antiferromagnetism. The experiments are based on the use of liquid helium and a superconducting magnet to obtain the wide temperature range ...

(19970901)A new approach to chemical bonding is introduced in order to provide an improved understanding of the connection between basic quantum mechanics and the covalent pair bond. Its focus is on the fact that the energy of the ...
Отображаемые элементы 2140 из 1313