Magnetometers can measure the magnetic fields of planets.

Magnetometers can give an indication of auroral activity before the light from the aurora becomes visible.

Magnetometers can also locate zones ignited by lightning ) and map siderite ( an impurity in coal ).

Magnetometers can be divided into two basic types:

Magnetometers can also be classified as " AC " if they measure fields that vary relatively rapidly in time, and " DC " if they measure fields that vary only slowly ( quasi-static ) or are static.

Magnetometers are distinct from metal detectors, which detect metallic objects by detecting their conductivity.

Magnetometers are also used to detect archaeological sites, shipwrecks and other buried or submerged objects.

Magnetometers are used in directional drilling for oil or gas to detect the azimuth of the drilling tools near the drill.

Airborne Magnetometers detect the change in the earth's magnetic field using sensors attached to the aircraft in the form of a " stinger " or by towing a magnetometer on the end of a cable.

Magnetometers detect minute deviations in the Earth's magnetic field caused by iron artifacts, kilns, some types of stone structures, and even ditches and middens in archaeological geophysics.

Magnetometers used in geophysical survey may use a single sensor to measure the total magnetic field strength, or may use two ( sometimes more ) spatially separated sensors to measure the gradient of the magnetic field ( the difference between the sensors ).

Magnetometers measure minute differences in the magnetic field of the earth caused by ferrous concentrations ( and iron objects ) in the soil, thermo-remnant magnetism of fired clays, and differences in the magnetic susceptibility of disturbed soils.

Magnetometers such as the German Forster are used to locate ferrous ordnance.

Magnetometers have a very diverse range of applications, including locating objects such as submarines, sunken ships, hazards for tunnel boring machines, hazards in coal mines, unexploded ordnance, toxic waste drums, as well as a wide range of mineral deposits and geological structures.

Magnetometers assist mineral explorers both directly ( i. e. gold mineralisation associated with magnetite, diamonds in kimberlite pipes ) and, more commonly, indirectly, such as by mapping geological structures conducive to mineralisation ( i. e. shear zones and alteration haloes around granites ).

Magnetometers used in the Earth sciences are called geophysical surveys, a term that also embraces a wide range of other geophysical techniques including gravity, seismic refraction, seismic reflection, electromagnetics ( EM ), induced polarisation ( IP ), magneto-tellurics ( MT ), controlled source magneto-tellurics ( CSAMT ), sub-audio magnetics ( SAM ), mise-a-la-masse, resistivity, self Potential ( SP ) and Very Low Frequency ( VLF ).

Magnetometers are one of the primary tools used to locate world-class deposits of gold, silver, copper, iron, tin, platinum and diamonds.

Magnetometers are also a component instrument on the Mercury MESSENGER mission.

Magnetometers react very strongly to iron and steel, brick, burned soil, and many types of rock, and archaeological features composed of these materials are very detectable.

Magnetometers monitor the auroral zone as well as the equatorial region.

* Magnetometers, usually of the flux gate type.

Magnetometers may also use a variety of different sensor types.

Here there may be an analogy with cancer: we can detect cancers by their rapidly accelerating growth, determinable only when related to the more normal rate of healthy growth.

If Af was assigned as the information cell for Af, the routine can detect that Af is identical to Af by comparing Af with the form stored at location Af.

Systems which detect submarines over wide areas are attractive, although they can be only `` burglar alarms ''.

In the adult state they have tear ducts and movable eyelids and most species have ears that can detect airborne or ground vibrations.

Damage to either of these areas can reduce the fitness of the rival, either because of the need to regenerate tissue or because it impairs its ability to detect food.

Standardized screening tools such as Zung Self-Rating Anxiety Scale, Beck Anxiety Inventory, Taylor Manifest Anxiety Scale and HAM-A ( Hamilton Anxiety Scale ) can be used to detect anxiety symptoms and suggest the need for a formal diagnostic assessment of anxiety disorder.

By studying these images, they can detect solar system objects by their movements relative to the background stars, which remain fixed.

IR spectroscopy can detect the relative age of an amber sample.

To supplement air traffic control, most large transport aircraft and many smaller ones use a traffic alert and collision avoidance system ( TCAS ), which can detect the location of nearby aircraft, and provide instructions for avoiding a midair collision.

Astrobiology addresses the question of whether life exists beyond Earth, and how humans can detect it if it does .< ref name =" about ">

The AGM-88 can detect, attack and destroy a radar antenna or transmitter with minimal aircrew input.

) or " plus or minus 1dB " ( roughly the sound level difference people usually can detect ).

Freeware software such as Rapid Evolution can detect the beats per minute and determine the percent BPM difference between songs.

Researchers at Ben Gurion University in Israel are developing a different device called the BioPen, essentially a " Lab-in-a-Pen ", which can detect known biological agents in under 20 minutes using an adaptation of the ELISA, a similar widely employed immunological technique, that in this case incorporates fiber optics.

The US military has specialized units, which can respond to a bioterrorism event ; among them are the US Marine Corp's Chemical Biological Incident Response Force and the U. S. Army's 20th Support Command ( CBRNE ), which can detect, identify, and neutralize threats, and decontaminate victims exposed to bioterror agents.

The tests currently available can detect mutations associated with rare genetic disorders like cystic fibrosis, sickle cell anemia, and Huntington's disease.

The historic interest of the rotating bucket experiment is its usefulness in suggesting one can detect absolute rotation by observation of the shape of the surface of the water.

Error detecting codes can be optimised to detect burst errors, or random errors.

" It is apparent that many animals can taste, or develop a taste, for calcium, and use this sense to detect the mineral in salt licks or other sources.

In addition, machine learning techniques can be used to detect new worms, by analyzing the behavior of the suspected computer.

" He takes it as obvious that we can detect the presence of consciousness and dismisses these replies as being off the point.

Interaction with memory hierarchy effects can make this overhead intolerable in circumstances that are hard to predict or to detect in routine testing.

At rates below 12 frame / s most people can detect jerkiness associated with the drawing of new images which detracts from the illusion of realistic movement.

If a cracker finds a computer, they can try a port scan to detect and attack services on that computer.