Research news on magnetometer measurement

A magnetometer measurement is an experimental procedure in which a magnetometer is used to quantitatively determine the magnitude and/or vector components of a magnetic field or magnetic moment under defined conditions. In methodological terms, it encompasses instrument calibration, control of environmental magnetic noise, selection of measurement geometry, and acquisition protocols such as scanning, time-resolved, or field-swept modes. Depending on the magnetometer type (e.g., SQUID, vibrating sample, Hall-effect, fluxgate), the measurement constrains sensitivity, spatial resolution, dynamic range, and bandwidth, and is used to characterize material magnetization, field gradients, or local magnetic environments in fundamental research and applied sensing.

The northern lights' dark twin is a wild card for the power grid

Scientists are working to understand how magnetic currents from the sun spread beneath Earth's crust when the northern lights dance across the sky. Their goal is to tame its "dark twin" and prevent damage to our power grid.

Ice satellite detects powerful geomagnetic storm with precision

It seems improbable that a satellite designed to monitor polar ice sheets and floating sea ice could accurately measure a disturbance in Earth's magnetic field. But that is just what ESA's CryoSat mission did earlier this ...

When Earth's magnetic field took its time flipping

Earth's magnetic field is generated by the churn of its liquid nickel-iron outer core, but it is not a constant feature. Every so often, the magnetic north and south poles swap places in what are called geomagnetic reversals, ...

Reading the moon's diary, one speck of dust at a time

Magnetism on the moon has always been a bit confusing. Remote sensing probes have noted there is some magnetic signature, but far from the strong cocoon that surrounds Earth itself. Previous attempts to detect it in returned ...

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