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

Magnetometers can detect only magnetic ( ferrous ) metals, but can detect such metals at a much larger depth than a metal detector ; magnetometers are capable of detecting large objects, such as cars, at tens of meters, while a metal detector's range is rarely more than 2 meters.

Magnetometers can measure the magnetic fields of planets.

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

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

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

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

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

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 are also a component instrument on the Mercury MESSENGER mission.

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 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 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.

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

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 ).

The developing plant roots are associated with mycorrhizal fungi that assist in breaking up the porous lava, and by these means organic matter and a finer mineral soil accumulate with time.

to assist with map geology and in the discovery of mineral deposits.

During the area's peak of prosperity in 1776 John Smeaton began construction of an underground drain ( the " Nent Force Level ") to de-water the mines of the Nent Valley and assist with the transport of extracted materials as well as to locate new mineral seams.

Magnetic separators may be useful in separating the magnetic fraction of a heavy mineral sand from the nonmagnetic fraction, which may assist in the panning or sieving of gold from the soil or stream.

A stopper on the canister of mineral oil was also released, so that it would slowly drip out and lighten the load on the balloon, to assist in maintaining altitude.

Initial English explorers of the area were assisted by " King Bungary ," leader of the Broken Bay Guringai tribe who went on to assist Matthew Flinders in the circumnavigation of Australia.

National Geographic has an archeology project, Field Expedition: Mongolia, in which users tag potential archeological dig sites on GeoEye satellite images, to assist explorers on the ground in Mongolia.

Bioartificial organs, which use both synthetic and biological components, are also a focus area in research, such as with hepatic assist devices that use liver cells within an artificial bioreactor construct.

He had earlier petitioned both the Queen and Burghley on the condemned Norfolk's behalf, to no avail, and it was reported that he had plotted to provide a ship to assist his cousin's escape attempt to Spain.

However, the verb " attend " in English is translated as assister in French and asistir in Spanish, both of which could be further misinterpreted as equivalent to the English " assist ", which means " to help " ( which is also another meaning of the Spanish's asistir ).

Numerous non-governmental organizations ( NGOs ), both national and international, are based in Kabul, conducting various activities to assist development in Afghanistan and provide humanitarian relief to the many victims which 30 years of war have produced.

Many logically-based program transformation techniques have been developed to assist the programmer in this process, transforming programs that are correct but inefficient into programs that are both correct and efficient.

Macroeconomic models and their forecasts are used by both governments and large corporations to assist in the development and evaluation of economic policy and business strategy.

Automatic rifles ( such as the Browning Automatic Rifle ) were designed to be a high duty cycle arm for support of other troops, and were often made and deployed with quick change barrel assemblies to allow quick replacement of over heated barrels to allow for continued fire, and may have been operated by both the person actually firing the weapon as well as an additional crewman to assist in providing and caring for ammunition and the barrels, similar to a reduced version of a squad weapon ( above ).

The only real check on the power of the networks is Edison Carter, a crusading investigative journalist who regularly exposes the unethical practices of his own employer, and the team of allies both inside and outside the system who assist him in getting his reports to air and protecting him from the forces that wish to silence or kill him.

The NMU Volunteer Center is designed to assist students, both individuals and in student organizations, as well as faculty and staff at the university with finding ways in which they can contribute to the Marquette community.

The technological and media sources that assist the public-speaking atmosphere include both videoconferencing and telecommunications.

Then he uses his cunning and inordinate weapons skill to assist a family threatened by both gangs.

Meanwhile, Sweden and Denmark, both Lutheran kingdoms, sought to assist the Protestant cause in the Empire, and wanted to gain political and economic influence there as well.

In the school prayer cases of the early 1960s, ( Engel v. Vitale and Abington School District v. Schempp ), aid seemed irrelevant ; the Court ruled on the basis that a legitimate action both served a secular purpose and did not primarily assist religion.

It is both an endocrine gland producing several important hormones, including insulin, glucagon, somatostatin, and pancreatic polypeptide, and a digestive organ, secreting pancreatic juice containing digestive enzymes that assist the absorption of nutrients and the digestion in the small intestine.

In return, they recognized Lothair as emperor, Conrad abandoned his title of King of Italy, and both promised to assist him in another Italian campaign, before a ten-year ‘ Landpeace ’ was declared.

In confidential proceedings the Court may assist both parties in securing a settlement, in which case the Court monitors the compliance of the agreement with the Convention.

Either or both of the main wings can support flaps or ailerons to assist lateral rotation and speed control ; usually the ailerons are mounted on the upper wing, and flaps ( if used ) on the lower wing.

The Department of Prime Minister and Cabinet is the primary consumer of these products, which are designed to assist the Australian Government in strategic decision making and ensure that government is fully briefed on emergent threats both in the region and globally.

* During his third consulate, the Roman consul Spurius Cassius Viscellinus proposes an agrarian law to assist needy plebeians, a measure violently opposed both by the patricians and by the wealthy plebeians, who have Cassius condemned and executed.

Cells sometimes protect their proteins against the denaturing influence of heat with enzymes known as chaperones or heat shock proteins, which assist other proteins both in folding and in remaining folded.

This policy was a part ( some argue the foundation ) of what became known as the " Australian Settlement ' which promoted high wages, industrial development, government intervention in industry ( both as an owner-Australian governments traditionally owned banks and insurance companies and the railways and through policies designed to assist particular industries ) and decentralisation.

O ' odham songs are accompanied by hard wood rasps and drumming on overturned baskets, both of which lack resonance and are " swallowed by the desert floor ", while dancing features skipping and shuffling quietly in bare feet on dry dirt, the dust raised being believed to rise to atmosphere and assist in forming rain clouds.

The Dutch however were too stunned and confused for a coherent reaction, so after a month the English delegation disclosed a plan by Cromwell to divide the world into two spheres of influence: the Dutch could control Africa and Asia ; in return they would assist the English in conquering both Americas from the Spanish.

Australia was one of the founders of both the United Nations and the South Pacific Commission ( 1947 ), and in 1950, it proposed the Colombo Plan to assist developing countries in Asia.

Worship in Hinduism involves invoking higher forces to assist in spiritual and material progress and is simultaneously both a science and an art.