Results 61 to 70 of about 55,539 (355)

Assessing the longitudinal measurement invariance of the Force Concept Inventory and the Conceptual Survey of Electricity and Magnetism

, 2020
The Force Concept Inventory and reduced Conceptual Survey of Electricity and Magnetism can be used to assess of students' changes in conceptual understanding over time in introductory physics courses.
Yang Xiao, Guangliang Xu, Jing Han, Hua Xiao, J. Xiong, Lei Bao   +5 more
semanticscholar   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Magnetic and Electrical Dimensions [PDF]

Nature, 1937
I DOUBT very much whether Sir James Henderson1 is justified in assuming that the members of the International Committee—and presumably also those of the various congresses and committees which have from time to time reaffirmed the decision that the permeability of space should be regarded as an entity having physical dimensions (the so-called Oslo ...
openaire   +6 more sources

Sol–Gel Synthesis of Ca2.5Ag0.3Sm0.2Co4O9 Semiconducting Materials for Thermoelectric Applications in Aerospace Systems

Advanced Engineering Materials, EarlyView.
Ca2.5Ag0.3Sm0.2Co4O9 semiconductor materials are synthesized and produced in this study using the sol–gel and cold pressing techniques for thermoelectric generator applications. As template samples are added, the Seebeck coefficient and power factor values rise, peaking at 800 °C for Ca2.5Ag0.3Sm0.2Co4O9 at 274.47 μV K−1 and 0.58 mW mK−2, respectively.
Enes Kilinc, Fatih Uysal, Mucahit Abdullah Sari, Huseyin Kurt, Erdal Celik   +4 more
wiley   +1 more source

Motivation, conceptual understanding, and critical thinking as correlates and predictors of metacognition in introductory physics

Cogent Education
The purpose of this study was to explore the relationship and prediction of motivation, conceptual understanding, and critical thinking on metacognition in introductory physics.
Endalamaw Dessie, Desta Gebeyehu, Fikadu Eshetu   +2 more
doaj   +1 more source

Learning physics in context: a study of student learning about electricity and magnetism

, 2005
This paper re-centres the discussion of student learning in physics to focus on context. In order to do so, a theoretically-motivated understanding of context is developed.
Aarons A. A., Bao L., Brown A., Brown J. S., Chi M., Coburn W.W., Cole M., Dewey J., diSessa A. A., diSessa A. A., Engeström Y., Engeström Y., Fine G. A., Finkelstein N. F., Gentner D., Goldberg F., Hake R. R., Halliday D., Hestenes D., Kelly A.E., Lave J., Laws P., Leander K., Maloney D. P., Mazur E., McCullough L., McDermott L. C., McDermott L. C., McDermott L. C., McDermott L. C., McDermott L. C., McDermott R., Merriam‐Webster, Mestre J. P., Noah Finkelstein, Otero V., Posner G. J., Redish E. F., Redish E. F., Redish E.F., Reif F., Reiner M., Rogoff B., Rogoff B., Scott T., Sokoloff D., Vygotsky L.   +46 more
core   +1 more source

New Developments in the Field of Production and Application of Multi‐Material Wire Arc Additive Manufacturing Components: A Review

Advanced Engineering Materials, EarlyView.
The utilization of direct energy deposition (DED)‐arc additive manufacturing processes in industrial applications is increasing, and these processes have the potential for multi‐material applications. This work provides a overview of the state of research in DED‐arc made functional graded structures, to establish a link to potential industrial ...
Kai Treutler, Volker Wesling
wiley   +1 more source

A Simulative Evaluation of Triply Periodic Minimal Surface Structures in the Context of Elastocaloric Applications

Advanced Engineering Materials, EarlyView.
A simulative evaluation of triply periodic minimal surface (TPMS) structures for an elastocaloric application under compressive load is performed. For the evaluation of the structure's performance, surface/volume ratio, generated heat and invested mechanical work are taken into account and are compared to a tube as a reference specimen.
Michael Fries, Paul Motzki, Dirk Bähre, Anne Jung   +3 more
wiley   +1 more source

Electric/magnetic flux tube on the background of magnetic/electric field [PDF]

Annalen der Physik, 2004
AbstractIt is argued that the phenomenon of a flux tube in quantum chromodynamics is closely connected with a spontaneously symmetry breakdown of gauge theory. It is shown that in the presence of a mass term in the SU(2) gauge theory the Nielsen‐Olesen equations describe the flux tube surrounded by an external field.
openaire   +3 more sources

Electrical magnetochiral effect induced by chiral spin fluctuations

, 2017
Chirality of matter can produce unique responses in optics, electricity and magnetism. In particular, magnetic crystals transmit their handedness to the magnetism via antisymmetric exchange interaction of relativistic origin, producing helical spin ...
Arima, T., Kagawa, F., Kanazawa, N., Kikkawa, A., Morikawa, D., Shibata, K., Taguchi, Y., Tokura, Y., Yokouchi, T.   +8 more
core   +2 more sources