Gradiometer
Get Gradiometer essential facts below. View Videos or join the Gradiometer discussion. Add Gradiometer to your PopFlock.com topic list for future reference or share this resource on social media.
Gradiometer
Scientist making a magnetic survey with an axial gradiometer.

A gradiometer measures the gradient (numerical rate of change) of a physical quantity, such as a magnetic field or gravity.[1]

Types of gradiometer

There are at least two types of gradiometer to measure magnetic fields:

  1. Axial gradiometer. This device consists of two magnetometers placed in series (i.e., one above the other). The result coming from the device is the difference in magnetic flux at that point in space, in other words, the result is the difference between what each of the magnetometers detects.
  2. Biaxial gradiometer. This device consists of three magnetometers measuring the gradient of the magnetic field in two directions.
  3. Triaxial gradiometer. This device consists of four magnetometers measuring the gradient of the magnetic field in three directions.
  4. Planar gradiometer. This device consists of two magnetometers placed next to each other. The result coming from the device is the difference in flux between the two loops.

Each sensor type responds differently to certain spatial signals.

Axial gradiometers are good for measuring depth, while planar gradiometers can measure weak signals even under a lot of noise.[2]

See also

References

  1. ^ "Gradiometer | Definition of Gradiometer by Merriam-Webster". Retrieved .
  2. ^ Ernst Niedermeyer ; Fernando Lopes da Silva (1982). Electroencephalography: Basic Principles, Clinical Applications, and Related fields. ISBN 9780781751261. Retrieved .CS1 maint: multiple names: authors list (link)



  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

Gradiometer
 



 



 
Music Scenes