near field
Adjacent signal zone
Near field describes the region immediately surrounding a source of electromagnetic radiation or sound waves, where the wave behavior is complex and doesn't follow simple propagation rules.
In audio, near-field monitoring means placing speakers close to the listener to minimize room acoustics: Near-field monitors sit on the desk, not across the room.
In technology, near-field communication (NFC) enables devices to exchange data when brought within a few centimeters of each other—tapping a phone to a payment terminal, for instance.
Directly next to
- immediateHappening without delay
- close-rangeFrom nearby proximity
- localOf this area
- surroundingEnclosing on all sides
neighboring · vicinity · accessible · contiguous · short-range · detection · sensing · localization
Formal admission process
- couplingJoint between systems
- antennaBroadcast signal receiver
- resonanceAmplified oscillation at natural frequency
- evanescentTending to vanish quickly
reactive · capacitive · inductive · energy transfer · wireless charging · eddy currents · permeability · dielectric
Close-proximity communication protocol
- contactlessRequiring no physical touch
- RFIDWireless identification via electromagnetic fields
- tap-to-payChip-proximity checkout method
- smartcardEmbedded-chip plastic credential
mobile payment · data exchange · e-wallet · digital wallet · tokenization · pairing · peer-to-peer · wireless
Inaudible high-frequency waves
- sonarUnderwater detection by echoes
- echolocationNavigation through reflected sound
- transducerEnergy form converter
- soundwaveTraveling pressure disturbance
resonance · frequency · amplitude · vibration · studio monitor · room acoustics · bass response · audio recording
adjacent
Directly next to
- immediateHappening without delay
- close-rangeFrom nearby proximity
- localOf this area
surrounding · neighboring · vicinity · accessible · contiguous · short-range · detection · sensing · localization · spatial
induction
Formal admission process
- couplingJoint between systems
- antennaBroadcast signal receiver
- resonanceAmplified oscillation at natural frequency
evanescent · reactive · capacitive · inductive · energy transfer · wireless charging · eddy currents · permeability · dielectric · waveguide
NFC
Close-proximity communication protocol
- contactlessRequiring no physical touch
- RFIDWireless identification via electromagnetic fields
- tap-to-payChip-proximity checkout method
smartcard · mobile payment · data exchange · e-wallet · digital wallet · tokenization · pairing · peer-to-peer · wireless · encryption
ultrasound
Inaudible high-frequency waves
- sonarUnderwater detection by echoes
- echolocationNavigation through reflected sound
- transducerEnergy form converter
soundwave · resonance · frequency · amplitude · vibration · studio monitor · room acoustics · bass response · audio recording · microphone technique