Here the new MR imaging technique without the magnet is proposed. Instead of the magnet it uses the earth's magnetic field. The results of the preliminary experiments make possible to reconstruct the NMR images of fantoms without using an radiofrequency shielding.StepinikErenMihailovi...
Earth's magnetic field is overdue a flip. Should we be worried? From time to time, the Earth's magnetic poles flip, leaving us without a protective magnetic field for up to centuries at a time. Exclusive US Offer - try a BBC Science Focus Magazine subscription and get your first 3 ...
Earth’s magnetic field is generated by fluid motions in the outer core. This geodynamo has operated for over 3.4 billion years. However, the mechanism that has sustained the geodynamo for over 75% of Earth’s history remains debated. In this Review, we assess the mechanisms proposed to...
The Magnetic Field Experiment (MGF) for the Arase mission was developed to conduct precise measurements of the static magnetic field and low-frequency magnetic field variations. In "Science objectives and requirements for MGF" section of this of paper, we describe the scientific objectives of the ...
Sediments continuously record variations of the Earth’s magnetic field and thus provide an important archive for studying the geodynamo. The recording process occurs as magnetic grains partially align with the geomagnetic field during and after sediment deposition, generating a depositional remanent magnet...
Earth’s magnetic field is generated by fluid motions in the outer core. This geodynamo has operated for over 3.4 billion years. However, the mechanism that has sustained the geodynamo for over 75% of Earth’s history remains debated. In this Review, we assess th...
Fig. 2 shows the response of each of the 6 sensors in the first experiment. The mechanical arm was positioned perpendicular to both the earth-magnetic field and earth gravity. While this position remained the same, the arm was torqued Discussion The measurements show that the developed sensor ...
Neutrals (STEIN) particle detector and a magnetoresistive magnetometer (MAGIC), which was implemented both inboard and on a deployed 1-meter stacer boom [169] for conducting high quality science observations of the Earth’s ring current, charged particle precipitation and the magnetic field [164]....
magnetic field experiment MMO: mercury magnetospheric orbiter MLAT: magnetic latitude MLT: magnetic local time MSC: magnetic search coil MSPS: mega-samples per second MSW: magnetosonic wave MWE: MAST/WPT-S electronics OFA: onboard frequency analyzer PSU: power supply unit PWE: Plasm...
Roughly 180 million years ago, during the height of the Jurassic period, the Earth's magnetic field flipped, bringing the magnetic north pole once again into the Northern Hemisphere. This so-called van Zijl reversal, named for the researcher who first described it, is the second-oldest well-...