AN ELECTRICAL RECORDING MAGNETOMETER

1957 ◽  
Vol 35 (12) ◽  
pp. 1387-1394 ◽  
Author(s):  
P. H. Serson
Keyword(s):  
Magnetic Field ◽  
Noise Level ◽  
Earth’S Magnetic Field ◽  
Electrical Recording ◽  
Strip Chart ◽  
Strip Chart Recording ◽  
Transformer Type ◽  
Orthogonal Components ◽  
Chart Recording ◽  
Fixed Station

An instrument for recording at a fixed station variations in three orthogonal components of the earth's magnetic field is described. The sensitive head, containing detectors of the saturated transformer type, can be operated out of doors at the end of a long cable. A strip-chart recording meter provides a visible record of the three d-c. output signals (1 volt = 100 gammas). Calibrated baseline controls permit biasing of the magnetic detectors for any location in Canada. Tests on 10 instruments indicate a noise level of 3 gammas and a maximum drift of 10 gammas in 10 hours.

scholarly journals Is there a role for strip chart recording to guide rotational atherectomy? Initial findings from stratas

1996 ◽  
Vol 27 (2) ◽  
pp. 292 ◽  
Author(s):  
David S. Eccleston ◽  
Mark C. Horrigan ◽  
Michael J. Cowley ◽  
Richard E. Kuntz ◽  
David O. Williams ◽  
...  
Keyword(s):  
Rotational Atherectomy ◽  
Strip Chart ◽  
Strip Chart Recording ◽  
Chart Recording

Measurement of chloride in sweat by use of a selective electrode and strip-chart recorder.

1978 ◽  
Vol 24 (2) ◽  
pp. 381-382 ◽  
Author(s):  
W J Warwick ◽  
L G Hansen
Keyword(s):  
Correlation Coefficient ◽  
Strip Chart Recorder ◽  
Selective Electrode ◽  
Strip Chart ◽  
Strip Chart Recording ◽  
Sweat Chloride ◽  
Chart Recorder ◽  
Potentiometric Measurement ◽  
Chart Recording

Abstract We describe a method for direct potentiometric measurement of sweat chloride by use of a chloride-selective electrode, with strip-chart recording of the measurement to facilitate interpretation of the measurement. Comparison of this method and the Gibson and Cooke method [Pediatrics 23, 545 (1959)] gave a correlation coefficient of 0.86. Recording of the same test at various pressures showed that different pressures had little effect if they were kept constant.

scholarly journals Observing Earth’s magnetic environment with the GRACE-FO mission

2021 ◽  
Vol 73 (1) ◽  
Author(s):  
C. Stolle ◽  
I. Michaelis ◽  
C. Xiong ◽  
M. Rother ◽  
Th. Usbeck ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Local Time ◽  
Noise Level ◽  
High Amplitude ◽  
Magnetic Data ◽  
Storm Event ◽  
Earth’S Magnetic Field ◽  
Magnetic Field Model ◽  
Earth's Magnetic Field ◽  
The Mean

AbstractThe Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission carries magnetometers that are dedicated to enhance the satellite’s navigation. After appropriate calibration and characterisation of artificial magnetic disturbances, these observations are valuable assets to characterise the natural variability of Earth’s magnetic field. We describe the data pre-processing, the calibration, and characterisation strategy against a high-precision magnetic field model applied to the GRACE-FO magnetic data. During times of geomagnetic quiet conditions, the mean residual to the magnetic model is around 1 nT with standard deviations below 10 nT. The mean difference to data of ESA’s Swarm mission, which is dedicated to monitor the Earth’s magnetic field, is mainly within ± 10 nT during conjunctions. The performance of GRACE-FO magnetic data is further discussed on selected scientific examples. During a magnetic storm event in August 2018, GRACE-FO reveals the local time dependence of the magnetospheric ring current signature, which is in good agreement with results from a network of ground magnetic observations. Also, derived field-aligned currents (FACs) are applied to monitor auroral FACs that compare well in amplitude and statistical behaviour for local time, hemisphere, and solar wind conditions to approved earlier findings from other missions including Swarm. On a case event, it is demonstrated that the dual-satellite constellation of GRACE-FO is most suitable to derive the persistence of auroral FACs with scale lengths of 180 km or longer. Due to a relatively larger noise level compared to dedicated magnetic missions, GRACE-FO is especially suitable for high-amplitude event studies. However, GRACE-FO is also sensitive to ionospheric signatures even below the noise level within statistical approaches. The combination with data of dedicated magnetic field missions and other missions carrying non-dedicated magnetometers greatly enhances related scientific perspectives.

Strip-Chart Recording of Narrow Band Frequency Analysis in Aid of Ethnomusicological Data

1972 ◽  
Vol 4 ◽  
pp. 119
Author(s):  
Stephen Erdely ◽  
Robert A. Chipman
Keyword(s):  
Frequency Analysis ◽  
Narrow Band ◽  
Band Frequency ◽  
Strip Chart ◽  
Strip Chart Recording ◽  
Chart Recording

Apparatus for Recording Avoidance Movements of Fish

1973 ◽  
Vol 30 (10) ◽  
pp. 1594-1596 ◽  
Author(s):  
E. Scherer ◽  
S. Nowak
Keyword(s):  
Test Specimen ◽  
Chemical Substances ◽  
Strip Chart ◽  
Continuous Measurements ◽  
Strip Chart Recording ◽  
Chart Recording ◽  
Rate Of Movement

An apparatus is described for continuous measurements of movements of fish exposed to chemical substances in a tank. A strip chart recording provides information on position and rate of movement of the test specimen during the experiment.

Earth's magnetic field reversals mimicked in the lab

Nature ◽  
2007 ◽  
Author(s):  
Philip Ball
Keyword(s):  
Magnetic Field ◽  
Earth’S Magnetic Field ◽  
Earth's Magnetic Field

The Atlas of the Earth's Magnetic Field

2012 ◽  
Author(s):  
A. Soloviev ◽  
A. Khokhlov ◽  
E. Jalkovsky ◽  
A. Berezko ◽  
A. Lebedev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Earth’S Magnetic Field ◽  
Earth's Magnetic Field

Atlas of Earth's magnetic field

2011 ◽  
Vol 12 (2) ◽  
pp. 1-9
Author(s):  
A. E. Berezko ◽  
A. V. Khokhlov ◽  
A. A. Soloviev ◽  
A. D. Gvishiani ◽  
E. A. Zhalkovsky ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Earth’S Magnetic Field ◽  
Earth's Magnetic Field

scholarly journals Night-time Sferic Propagation at Frequencies Below 10 KHz

1967 ◽  
Vol 20 (1) ◽  
pp. 101 ◽  
Author(s):  
KJW Lynn ◽  
J Crouchley
Keyword(s):  
Magnetic Field ◽  
Geographic Distribution ◽  
Angle Of Incidence ◽  
European Studies ◽  
Earth’S Magnetic Field ◽  
Night Time ◽  
The West ◽  
Earth's Magnetic Field ◽  
Effective Angle

Results of a study at Brisbane of individual night-time sferics of known origin are described. A propagation attenuation minimum was observed in the 3-6 kHz range. The geographic distribution of sferic types was also examined. Apparent propagation asynunetries were observed, since sferics were detected at greater ranges to the west than to the east at 10 kHz, whilst the number of tweek-sferics arising from the east was about four times that arising from the west. Comparison with European studies suggest that these asymmetries are general. These results are then " interpreted in terms of an ionospheric reflection cgefficient which is a function of the effective angle of incidence of the wave on the ionosphere and of orientation with respect to the Earth's magnetic field within the ionosphere.

scholarly journals Investigation of the rotational motion stability of the aist small spacecraft prototype according to the measurements of the earth’s magnetic field

2021 ◽  
Vol 1901 (1) ◽  
pp. 012022
Author(s):  
A V Sedelnikov ◽  
A S Taneeva ◽  
E S Khnyryova ◽  
M V Kamaletdinova ◽  
E D Martynova
Keyword(s):  
Magnetic Field ◽  
Rotational Motion ◽  
Earth’S Magnetic Field ◽  
Motion Stability ◽  
Small Spacecraft ◽  
Earth's Magnetic Field
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