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Related Concept Videos

Magnetism01:30

Magnetism

Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
Magnetic Declination01:19

Magnetic Declination

Magnetic declination is the angle between true north, which aligns with the Earth's rotational axis, and magnetic north, which follows the direction of the Earth's magnetic field. This discrepancy exists because the magnetic poles do not coincide with the geographic poles. The value of magnetic declination depends on the observer's location on Earth and is subject to changes over time due to the dynamic nature of the Earth's magnetic field.The declination is called eastern when magnetic north...
Galvanometer01:24

Galvanometer

Common devices, including car instrument panels, battery chargers, and inexpensive electrical instruments, measure potential difference (voltage), current, or resistance using a d'Arsonval galvanometer. This electromechanical instrument is also known as a moving coil galvanometer.
The galvanometer consists of  two concave-shaped permanent magnets, providing a uniform radial magnetic field in the annular region. In the center, a pivoted coil of fine copper wire is placed in the uniform magnetic...
Compass01:23

Compass

The compass is a fundamental instrument that operates by aligning its magnetic needle with Earth's magnetic field. This alignment facilitates navigation and orientation, offering a means to determine direction relative to magnetic north. However, the magnetic needle points to magnetic north, which differs slightly from true geographic north due to magnetic declination, which is the angular deviation between these two points. Declination varies based on geographic location and shifts over time...
Magnetic Fields01:27

Magnetic Fields

A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
Diamagnetism01:26

Diamagnetism

Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.

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Related Experiment Video

Updated: May 8, 2026

Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT
08:57

Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT

Published on: March 3, 2023

The IMAP Magnetometer.

T S Horbury1, H L O'Brien1, C Greenaway1

  • 1Imperial College London, London, SW7 2AZ UK.

Space Science Reviews
|May 7, 2026
PubMed
Summary
This summary is machine-generated.

The Interstellar Mapping and Acceleration Probe (IMAP) magnetometer provides crucial space weather data. Its advanced fluxgate design ensures high-fidelity measurements for studying energetic particle acceleration and propagation.

More Related Videos

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

Related Experiment Videos

Last Updated: May 8, 2026

Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT
08:57

Measuring the Influence of Magnetic Vestibular Stimulation on Nystagmus, Self-Motion Perception, and Cognitive Performance in a 7T MRT

Published on: March 3, 2023

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

Area of Science:

  • Space Physics
  • Heliophysics
  • Astrophysics

Background:

  • The Interstellar Mapping and Acceleration Probe (IMAP) mission aims to investigate energetic particle acceleration and propagation.
  • In situ and remote measurements are critical for understanding the heliosphere and space weather.
  • A robust magnetometer is essential for achieving IMAP's scientific objectives.

Purpose of the Study:

  • To detail the requirements, design, and performance of the Magnetometer (MAG) instrument for the IMAP mission.
  • To highlight MAG's contribution to IMAP's science goals, including energetic particle studies and space weather monitoring.
  • To present the instrument's capabilities, including its measurement cadence, noise floor, and data processing plans.

Main Methods:

  • Description of a conventional dual-sensor fluxgate magnetometer design.
  • Implementation of a novel lossless data compression algorithm.
  • Continuous and burst mode data acquisition strategies at specified cadences (2 vectors/s, 64 vectors/s).

Main Results:

  • The MAG instrument meets stringent requirements with a noise floor below 10 pT at 1 Hz.
  • Continuous science measurements at 2 vectors/s and burst mode at 64 vectors/s are supported.
  • A real-time space weather monitoring product is available at a 4-second cadence.

Conclusions:

  • The MAG instrument is designed to provide high-quality magnetic field data crucial for IMAP's mission objectives.
  • The instrument's capabilities support both detailed scientific investigations and real-time space weather applications.
  • Comprehensive data products, processing, and calibration plans ensure the utility and reliability of the MAG data.