Results 241 to 250 of about 52,218 (285)

Measuring the Earth’s magnetic field in a laboratory

Physics Education, 2008
Two methods for measuring the Earth's magnetic field are described. In the former, according to Gauss, the Earth's magnetic field is compared with that of a permanent magnet; in the latter, a well-known method, the comparison is made with the magnetic field generated by a current.
CARTACCI, ANNA MARIA, STRAULINO, SAMUELE
openaire   +1 more source

Fall in Earth's Magnetic Field Is Erratic

Science, 2006
Earth's magnetic field has decayed by about 5% per century since measurements began in 1840. Directional measurements predate those of intensity by more than 250 years, and we combined the global model of directions with paleomagnetic intensity measurements to estimate the fall in strength for this earlier period (1590 to 1840 A.D.).
David, Gubbins, Adrian L, Jones, Christopher C, Finlay   +2 more
openaire   +2 more sources

The Earth's Magnetic Field

2023
Abstract Legendary anecdotes relate how Greco-Roman and Chinese societies may have first become aware of magnetism. For centuries it was thought to be a celestial power, but scientists learned through experimental investigations how magnetism is related to electrical currents.
openaire   +1 more source

The Room with the Weakest Magnetic Field on Earth

Scientific American, 2015
The article discusses a room at the Technical University of Munich in Germany which is designed to contain the weakest magnetic field in the solar system. Physicists will be able to use the room for research on topics such as antimatter, magnetic monopoles, dark matter, and the role of magnetic fields in animal navigation.
openaire   +2 more sources

Magnetic disturbances and the Earth's magnetic field

Journal of Geophysical Research, 1961
An attempt is made to explain the origin of the observed magnetic field of the earth as being due to a current system circulating in the core, the current system in its turn being maintained by world-wide magnetic disturbances. The mantle behaves as a semiconductor, and the conduction electron density is given by the Boltzmann distribution law.
openaire   +1 more source

Reversals of the Earth's Magnetic Field

Scientific American, 1967
A, Cox, R R, Doell, G B, Dalrymple
openaire   +2 more sources

Earth's magnetic field

Physics in Higher Education, 2022
V. I. Demidchenko, M. G. Guidalaev, P. A. Strоgiy   +2 more
openaire   +1 more source

Magnetic-thermal external field activate the pyro-magnetic effect of pyroelectric crystal (NaNbO3) to build a promising multi-field coupling-assisted photoelectrochemical water splitting system

Applied Catalysis B: Environmental, 2023
Baojun Li, Yongjin Zou
exaly  

Electric Field Control of the Magnetic Weyl Fermion in an Epitaxial SrRuO3 (111) Thin Film

Advanced Materials, 2021
Weinan Lin, Liang Liu, Xinyu Shu
exaly  

Analysis and Design of a Uniform Magnetic Field Coil With a Magnetic Shield Based on an Improved Analytical Model

IEEE Transactions on Industrial Electronics, 2022
Yinxi Jin, Liyi Li, Donghua Pan
exaly