Editing Field strength

{{Short description|Magnitude of a vector-valued field}}
In [[physics]], '''field strength''' refers to a value in a [[vector (geometry)|vector]]-valued [[field (physics)|field]] (e.g., in volts per meter, V/m, for an [[electric field]] '''''E''''').<ref>{{Cite web |title=What is electric field strength and how is it measured? |url=https://www.techtarget.com/whatis/definition/electric-field-strength |access-date=2022-11-10 |website=WhatIs.com |language=en}}</ref> 
For example, an [[electromagnetic field]] has both [[electric field strength]] and [[magnetic field strength]].

Field strength is a common term referring to a ''[[vector]]'' quantity.  However, the word 'strength' may lead to confusion as it might  be referring only to the [[magnitude (mathematics)|magnitude]] of that vector.  For both gravitational field strength and for electric field strength, The Institute of Physics glossary states "this glossary avoids that term because it might be confused with the magnitude of the [gravitational or electric] field".<ref>{{cite web |url=https://spark.iop.org/gravitational-field |website=Institute of Physics |access-date=30 May 2025 |title=Gravitational field &#124; IOPSpark }}</ref>

As an application, in [[radio frequency]] [[telecommunications]], the [[signal strength]] excites a receiving antenna and thereby induces a voltage at a specific frequency and polarization in order to provide an input signal to a radio receiver. [[Field strength meter]]s are used for such applications as cellular, broadcasting, wi-fi and a wide variety of other radio-related applications.<ref>{{Cite web |title=Field Strength Monitors & Probes |url=https://www.atecorp.com/category/field-strength-monitors-probes |access-date=November 10, 2022 |website=atecorp}}</ref>
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Magnetic Field intensity is expressed as H; its usual unit is amperes/meter, A/m, A-turn/m, A-t/m.
Magnetic field intensity is equal TO B/u, Where 'B' is magnetic flux density and 'u' is permeability of the medium.--->

==See also==
* [[Dipole field strength in free space]]
* [[Field strength tensor]]
* [[Signal strength in telecommunications]]

==References==
{{Reflist}}

[[Category:Electromagnetism]]
[[Category:Physical quantities]]


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