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

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 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 can be divided into two basic types:

Magnetometers may also use a variety of different sensor types.

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

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 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 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 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 can measure the magnetic fields of planets.

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

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 ).

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 monitor the auroral zone as well as the equatorial region.

* Magnetometers, usually of the flux gate type.

but it becomes very important if foreign peoples react the way human beings typically do -- namely, by taking steps to end up on what appears to be the winning side.

The intervening elements react differently at different frequencies of light as they whip in and out of view, causing Alioth to have very strange spectral lines that fluctuate over a period of 5. 1 days.

The cancer cells then react very much more effectively to the cytostatics and radiation.

Cells using water-based electrolytes are usually limited to cell potentials less than about 2. 5 volts, because the very powerful oxidizing and reducing agents which would be required to produce a higher cell potential tend to react with the water.

Sodium ions react very little with the hydroxyl ions whereas the acetate ions combine with hydrogen ions to produce acetic acid.

Most of these are oxidizers ( i. e. acceptors of electrons ) and some react very strongly.

For this reason, it is characteristic of groups within which a given narrative circulates to react very negatively to claims or demonstrations of non-factuality ; an example would be the expressions of outrage by police officers who are told that adulteration of Halloween treats by strangers ( the subject of periodic moral panics ) is extremely rare, if it has occurred at all.

Because of the quasi-overlap of the power strokes that cause the smoothness of the engine and the avoidance of the 4-stroke cycle in a reciprocating engine, the Wankel engine is very quick to react to throttle changes and is able to quickly deliver a surge of power when the demand arises, especially at higher rpm.

Use of water in fire fighting should also take into account the hazards of a steam explosion, which may occur when water is used on very hot fires in confined spaces, and of a hydrogen explosion, when substances which react with water, such as certain metals or hot carbon such as coal, charcoal, coke graphite, decompose the water, producing water gas.

" He is, moreover, very complicated, there being in him a mixture of Middle Ages Catholicism and satanic impiety, but also a love of Art and Beauty which guide him and which make him react candidly.

The central idea is that, under pressure, it is impossible to visually recognize the precise direction and speed of an attack and make a conscious decision on an effective way in which to react, all within the very brief amount of time you have before your opponent's attack lands.

Rather, one must ( counter ) attack immediately in a very direct and protected manner and rely on reflexes to determine how to react if the opponent's attack continues to pose a problem.

Heavy water has very low neutron absorption, so heavy water reactors such as CANDU reactors also have a positive void coefficient, though it is not as large as that of an RBMK like Chernobyl ; these reactors are designed with a number of safety systems not found in the original RBMK design, which are designed to handle or react to this as needed.

While stable under defined storage conditions, they react very rapidly under certain other conditions to produce a large volume of energetic ( hot ) gases for the performance of mechanical work.

At very low altitudes there were only seconds in which to react when spotting an aircraft over local terrain, so a hand-swung weapon was the only possibility, no matter how inaccurate.

If another stuffed owl is introduced ( or the same one removed and re-introduced ), the birds react to it again as though it were a predator, demonstrating that it is only a very specific stimulus that is habituated to ( namely, one particular unmoving owl in one place ).

Starches do not react or react very poorly with Benedict's reagent, due to the relatively small number of reducing sugar moieties, which occur only at the ends of carbohydrate chains.

They have excellent hearing, and a school can react very quickly to evade predators.

Particular concern is warranted when using " green " cleaning products based on citrus or terpene extracts as these chemicals react very quickly with ozone to form toxic and irritating chemicals as well as fine and ultrafine particles.

Has just started in shufflepuck and thus is very nervous and slow to react, making him easy to beat.

Because of its extreme oxidizing potential, T-stoff was a very dangerous chemical to handle, so special rubberized suits were required when working with it, as it would react with most cloth or other combustible material and cause it to spontaneously combust.

Concentration plays a very important role in reactions, because, according to the collision theory of chemical reactions, molecules must collide in order to react together.