Permanent magnet field

In the schematic the detector coil (hatched boxes) and its associated field lines are shown (dotted) and are seen to be always orthogonal to the permanent magnet field lines (solid). The magnitude of the static field is constant in the horizontal plane (thick black line). A stepper motor and gear-drives for raising the whole assembly relative to the external surface are visible in the photograph. 

The magnetization measurements have been carried out using an apparatus for magnetic measurements, constructed on the principle of a vibrating-sample magnetometer in the temperature range of 300-700 K in permanent magnetic fields up to 12 kOe under gas pressure up to 12 atm. 

To evaluate the cytoxicity of folate targeted magnetic liposomes under permanent magnetic field, the plate with magnetic liposomes is put on a 96 well format magnetic plate for the first hour of incubation by another hour incubation without magnetic field (total 2 h incubation). 

Fig, 6,15 Scheme of an NMR device. The field strength influences resolution and sensitivity of the measurement. Bq = permanent magnetic field. Transmitter and receiver for superimposed radio frequency field. Adapted with kind permission from [222]... 

Persinger M.A. Putative Perception of Rotating Permanent Magnetic Fields Following Ingestion of LSD Percept. Mot. Skills (1998) Oct 87(2) 601-2 ... 

During the polarization of protons in the permanent magnets field Bq (Figure 7) the spin temperature of the proton system approaches lattice temperature Tl- After the Tl temperature is reached, the entropy of the proton system equals ... 

Then the sample is removed from the field of the magnets. To preserve the proton polarization, the demagnetization process is carried out adiabatically dB/dt < 7h 1oc/ where 7h is the gyromagnetic ratio for protons, Bioc is the mean local dipole field at the sites of protons). The value of the permanent magnetic field inside the sample slowly decreases finally reaching the value oiB 2tivn/7h-The entropy of the Zeeman proton reservoir at this moment is determined by expression... 

It is possible to take into account sky background and dark noise in the automatic mode of operation. For this purpose diaphragms are put in a permanent magnetic field. The management system may displace it from one position to another with frequency of 6 Hz. The diaphragm displacement value can be regulated from 0 up to 2 centimeters. The transition time of the diaphragm is about 8 ms. 

Wireless sensors capable of measuring biopotentials, angle, position, pressure, temperature, and permanent magnet fields. 

E. Odeblad, Micro-NMR in High Permanent Magnetic Fields, Nordisk Foren-ing for Obsterik och Gynekologi, Lund, Sweden (1966). 

Magnets are pieces of ferromagnetic material they produce a permanent magnetic field. 

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