Results 51 to 60 of about 15,290 (285)

Multidimensional Item Response Theory and the Conceptual Survey of Electricity and Magnetism

Physical Review Physics Education Research, 2019
[This paper is part of the Focused Collection on Quantitative Methods in PER: A Critical Examination.] While many studies have examined the structure, validity, and reliability of the Force Concept Inventory, far less research has been performed on other
Cabot Zabriskie, John Stewart
doaj   +1 more source

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Relationship of prior preparation and conceptual diagnostic measures to success in the upper-level electricity and magnetism course

Physical Review Physics Education Research
The majority of previous studies of physics courses at the upper undergraduate level have been content-related or focused on the format of instruction, while detailed investigation of student performance patterns across various conceptual and ...
Fargol Seifollahi, David E. Meltzer, Chandralekha Singh   +2 more
doaj   +1 more source

Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction

Advanced Functional Materials, EarlyView.
This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia, Ciqun Xu, Michael D. Dickey, Jonathan Rossiter   +3 more
wiley   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Physics students’ construction of differential length vectors in an unconventional spherical coordinate system

Physical Review Physics Education Research, 2019
Vector calculus and multivariable coordinate systems play a large role in the understanding and calculation of much of the physics in upper-division electricity and magnetism. Differential vector elements represent one key mathematical piece of students’
Benjamin P. Schermerhorn, John R. Thompson   +1 more
doaj   +1 more source

UMA ANÁLISE HISTÓRICA DE ALGUNS ASPECTOS DO TEXTO “AN ESSAY ON THE APLICATION OF MATHEMATICAL ANALYSIS TO THE THEORIES OF ELECTRICITY AND MAGNETISM” DE GEORGE GREEN

Revista Brasileira de História da Matemática, 2020
Neste artigo apresento uma análie das seções 1 a 4 da terceira parte do "An Essay on the Aplication of Mathematical Analysis to the Theories of Electricity and Magnetism" de George Green.
Marcos Vieira Teixeira
doaj   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

On later views of the connection of electricity and magnetism

, 1873
ON LATER VIEWS OF THE CONNECTION OF ELECTRICITY AND MAGNETISM On later views of the connection of electricity and magnetism (-
Helmholtz, Hermann von
core   +1 more source

Modeling Instruction In AP Physics C: Mechanics And Electricity And Magnetism [PDF]

, 2017
his action research study used data from multiple assessments in Mechanics and Electricity and Magnetism to determine the viability of Modeling Instruction as a pedagogy for students in AP Physics C: Mechanics and Electricity and Magnetism.
Belcher, Nathan Tillman
core   +1 more source