Results 41 to 50 of about 5,594 (190)

Integro-differential equations of magnetostatics for calculation of nonlinear inductances in low-pass filters [PDF]

open access: yesITM Web of Conferences, 2019
In this work on the basis of the obtained integral relations, including integral equations, taking into account the influence of magnetic screens from a nonlinear magnetic on the inductance of multilayer coils in dependence of the current strength, the ...
Kornev Igor, Shapovallov Alexander
doaj   +1 more source

Comment on 'A generalized Helmholtz theorem for time-varying vector fields by A. M. Davis, [Am. J. Phys. 74, 72-76 (2006)]'

open access: yes, 2006
In a recent paper Davis formulated a generalized Helmholtz theorem for a time-varying vector field in terms of the Lorenz gauge retarded potentials. The purposes of this comment are to point out that Davis's generalization of the theorem is a version of ...
Jefimenko O. D.   +2 more
core   +1 more source

A Passive Low‐Frequency, High‐Sensitivity Diamagnetic Levitation Accelerometer

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Despite the great potential of diamagnetic levitation accelerometers in detecting low‐frequency and weak motion, there is still a demand to further enhance their sensitivity for geophysical and microgravity applications. In this study, a straightforward structural modulating approach is presented to enhance the sensitivity of diamagnetic ...
Yuanping Xu   +5 more
wiley   +1 more source

The magnetic shielding for the neutron decay spectrometer aSPECT

open access: yes, 2014
Many experiments in nuclear and neutron physics are confronted with the problem that they use a superconducting magnetic spectrometer which potentially affects other experiments by their stray magnetic field. The retardation spectrometer aSPECT consists,
Baeßler, Stefan   +8 more
core   +2 more sources

Questioning Your Brilliance in Physics: Differential Shifts in Fixed Mindsets by Grade and Gender

open access: yesJournal of Research in Science Teaching, EarlyView.
ABSTRACT Students' domain‐specific mindsets and their beliefs about their capacity to improve through effort play a crucial role in shaping their experiences and decisions to persist in STEM disciplines. Physics is generally seen as a field requiring innate brilliance, which can reinforce fixed mindsets, particularly after initial setbacks in ...
Fargol Seifollahi   +2 more
wiley   +1 more source

ASSESSMENTS FOR THE COUPLING OF SUPERPARAMAGNETIC PARTICLES [PDF]

open access: yesProceedings on Engineering Sciences, 2019
The physical analytical conditions for coupling of superparamagnetic particles have been regarded in the present paper. The cases of two interacting superparamagnetic particles and superparamagnetic particle with another one being in single domain state ...
Farshed KARIMOV
doaj   +1 more source

Magnetic illusion: transforming a magnetic object into another object by negative permeability

open access: yes, 2018
We theoretically predict and experimentally verify the illusion of transforming the magnetic signature of a 3D object into that of another arbitrary object.
Del-Valle, Nuria   +5 more
core   +1 more source

Acquisition of Self‐Reversed Magnetization in Greigite Driven by Antiparallel Vortex‐Core Coupling During Low‐Temperature Oxidation

open access: yesGeophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Self‐reversed magnetization, acquired antiparallel to the external field, can complicate the interpretation of paleomagnetic directional records, particularly in altered greigite‐bearing sediments with anomalous magnetizations. The underlying physical process for this self‐reversal remains poorly constrained.
Shichu Chen, Liao Chang, Wyn Williams
wiley   +1 more source

An unexpected paradox in the Kelvin ponderomotive force theory

open access: yesResults in Physics, 2015
We show that the ubiquitous formula for ponderomotive forces due to a distribution of a polarized substance implies a non-vanishing self-force. This constitutes a striking paradox since this prediction is in startling contrast with observed phenomena.
Michael Grinfeld, Pavel Grinfeld
doaj   +1 more source

Numerical Simulation of a Nonlinear Problem Arising in Heat Transfer and Magnetostatics

open access: yesProceedings, 2020
We present a numerical model that comprises a nonlinear partial differential equation. We apply an adaptive stabilised mixed finite element method based on an a posteriori error indicator derived for this particular problem.
María González, Hiram Varela
doaj   +1 more source

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