Results 111 to 120 of about 31,605 (318)

The meanings of mass and E = mc2: an approach based on conceptual maps

Revista Brasileira de Ensino de Física
In this work, we discuss transformations in the meaning of the concept of mass, which are important to physics teaching, by means of three conceptual schemes, which emphasize visual patterns of knowledge organization.
Fabiana B Kneubil
doaj   +1 more source

Mesoscopic Josephson arrays interacting with non-classical electromagnetic fields and their applications [PDF]

, 2000
A. Konstadopoulou
openalex   +1 more source

Solvent‐Free Phase Separation of Polystyrene‐block‐poly(2‐hydroxyethyl methacrylate) Forming Freestanding Photonic Films

Advanced Materials Interfaces, EarlyView.
This work presents a scalable, eco‐friendly approach to forming microstructured block copolymer (BCP) films within 15 min through hot pressing. This process enables phase separation even for high‐molecular‐weight BCPs, which are often trapped in spherical structures using time‐consuming solvent processes.
Martina Plank, Enis Musa Saritas, Bart‐Jan Niebuur, Tobias Meckel, Dirk Lellinger, Peter Krolla, Markus Biesalski, Tobias Kraus, Markus Gallei   +8 more
wiley   +1 more source

Gravitational scattering and beyond from extreme mass ratio effective field theory

Journal of High Energy Physics
We explore a recently proposed effective field theory describing electromagnetically or gravitationally interacting massive particles in an expansion about their mass ratio, also known as the self-force (SF) expansion. By integrating out the deviation of
Clifford Cheung, Julio Parra-Martinez, Ira Z. Rothstein, Nabha Shah, Jordan Wilson-Gerow   +4 more
doaj   +1 more source

Morphology vs. Specific Surface Area: Which Plays the Leading Role in Microwave Absorption?

Advanced Materials Interfaces, EarlyView.
The role of morphology and specific surface area on microwave absorbing characteristics is systematically evaluated and compared. The matrix effect on microwave absorbing performance is studied using polyacetylurea. Implanted carbon nanotubes by red phosphorus and in situ polymerization of polyindole promoted microwave absorption.
Reza Peymanfar, Vahid Mirkhan, Zahra Nezafat   +2 more
wiley   +1 more source

Extension of Maxwell's equations for non-stationary magnetic fluids using gauss's divergence theorem

Results in Engineering
The work presented in this paper focuses on formulating the development of time-dependent electromagnetic field laws through the application of Gauss's divergence theorem. The first part of the discussion looks at the basic ideas of electromagnetism.
Mohammed Bouzidi, Abdelfatah NASRI, Mohamed Ben Rahmoune, Oussama Hafsi, Dessalegn Bitew Aeggegn, Sherif S. M. Ghoneim, Enas Ali, Ramy N. R. Ghaly   +7 more
doaj   +1 more source

Advances in Halide Perovskites for Photon Radiation Detectors

Advanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang, Jieqi Wang, Xiaojun Cui, Carsten Ronning   +3 more
wiley   +1 more source

Classical Electromagnetic Field Theory in the Presence of Magnetic Sources [PDF]

, 2003
Kang Li, Wenjun Chen, Carlos Naón
openalex   +1 more source

An Ultra‐Sub‐Wavelength Microwave Polarization Switching Antenna for Covert Communication Implemented With Directed Surface Acoustic Waves in an Artificial Multiferroic Magnonic Crystal

Advanced Materials Technologies, EarlyView.
A surface acoustic wave (SAW) launched in a two‐dimensional periodic array of magnetostrctive nanomagnets on a piezoelectric substrate excites spin waves in the nanomagnets which radiate electromagnetic waves in space. The polarization of the emitted beam in particular directions and at particular frequencies can be switched between horizontal and ...
Raisa Fabiha, Erdem Topsakal, Supriyo Bandyopadhyay   +2 more
wiley   +1 more source

A new approach to Kaluza-Klein Theory

, 2017
We propose in this paper a new approach to the Kaluza-Klein idea of a five dimensional space-time unifying gravitation and electromagnetism, and extension to higher-dimensional space-time.
Collion, Stephane, Vaugon, Michel
core