magnetometer
(instrument to measure the strength of a magnetic field)
A magnetometer is an instrument to measure
the strength of a magnetic field. There are many
kinds now in use, both on Earth, e.g., for geology,
and in space probes. The first type invented
used the fact that a voltage could be induced
by using a conductor in the magnetic field
(Hall effect). In space missions, often
they use magnetic induction to sense a field's
change (as the probe traverses a magnetic field),
often with three elements aligned to record the
changes sensed in the three dimensions.
Magnetometers are used to study the solar magnetic
field as well as that of planets and moons visited
by space probes. An overall dipole magnetic field suggests
a dynamo-induced magnetic field, and a change
in the magnetic field over time suggests movement
of something conductive within the planet or its
atmosphere, making it a probe of geological activity,
or ocean or atmosphere activity.
(instrument type,magnetism)
Further reading:
https://en.wikipedia.org/wiki/Magnetometer
https://en.wikipedia.org/wiki/Spacecraft_magnetometer
https://en.wiktionary.org/wiki/magnetometer
https://www.allaboutcircuits.com/technical-articles/what-is-a-magnetometer/
https://solarsystem.nasa.gov/missions/cassini/mission/spacecraft/cassini-orbiter/magnetometer/
https://ui.adsabs.harvard.edu/abs/2012SPIE.8446E..78D/abstract
Referenced by pages:
Aditya-L1
Advanced Composition Explorer (ACE)
Cassini
Coronal Solar Magnetism Observatory (COSMO)
DISCOVR
Europa Clipper
Galileo
Giotto
Hayabusa2
IMAP
International Cometary Explorer (ICE)
JUICE
Juno
Lunar Prospector
Magnetospheric Multiscale Mission (MMS)
Mars Global Surveyor (MGS)
Mars Observer (MO)
MAVEN
MESSENGER
NEAR Shoemaker (NEAR)
paleomagnetism
Pioneer Venus Orbiter (PVO)
Psyche
Rosetta
SELENE
Solar Orbiter (SolO)
SQUID
SWFO-L1
THEMIS
Tianwen-1 (TW-1)
Ulysses
Uranus Orbiter and Probe
Venus Express
Voyager
Index