near field
The term "near field" is used across various scientific and technical fields to describe regions close to a source where specific physical properties are observed.
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Definition
C1Acoustics
(technical, academic)The area close to a sound source where direct sound is dominant over reflected sound.
Example
- In the near field of the speaker, the sound is much clearer and less affected by room acoustics.
C1Electronics
(technical, academic)The region around an antenna where the distance is less than half the wavelength of the signal.
Example
- Near-field communication devices work effectively within a few centimeters of each other.
C1Optics
(technical, academic)The area close to a beam focus or object where certain optical approximations are valid.
Example
- In laser optics, the near field is crucial for precise measurements and manipulations.
C2Mathematics
(technical, academic)A mathematical structure describing properties of certain fields.
Similar
Terms that have similar or relatively close meanings to "near field":
near spaceelectric fieldelectrical fieldfield upclose byclose reachin the fieldfield stop