Positive-feedback



noun, Electronics.
1.
See under (def 1).
[feed-bak] /ˈfidˌbæk/
noun
1.
Electronics.

2.
the furnishing of data concerning the operation or output of a machine to an automatic control device or to the machine itself, so that subsequent or ongoing operations of the machine can be altered or corrected.
3.
a reaction or response to a particular process or activity:
He got very little feedback from his speech.
4.
evaluative information derived from such a reaction or response:
to study the feedback from an audience survey.
5.
Psychology. knowledge of the results of any behavior, considered as influencing or modifying further performance.
Compare .
6.
Biology. a self-regulatory biological system, as in the synthesis of some hormones, in which the output or response affects the input, either positively or negatively.
/ˈfiːdˌbæk/
noun
1.

2.
the return of part of the sound output by a loudspeaker to the microphone or pick-up so that a high-pitched whistle is produced
3.
the whistling noise so produced
4.

5.
information in response to an inquiry, experiment, etc: there was little feedback from our questionnaire
verb, adverb
6.
(transitive) to return (part of the output of a system) to its input
7.
to offer or suggest (information, ideas, etc) in reaction to an inquiry, experiment, etc
noun
1.
See feedback (sense 1)
n.

1920, in the electronics sense, from feed + back (adj.). Transferred use, “information about the results of a process” is attested by 1955.

feedback feed·back (fēd’bāk’)
n.

feedback
(fēd’bāk’)
The supply of an input to some process or system as a function of its output. See more at negative feedback, positive feedback.

positive feedback
Feedback in which the output quantity or signal adds to the input quantity or signal. Positive feedback is responsible for the squealing of microphones when placed too close to the speaker through which their input signals are amplified. Compare negative feedback.

A process in which a system regulates itself by monitoring its own output. That is, it “feeds back” part of its output to itself. Feedback is used to control machines; a heating system, for example, uses a thermostat to monitor and adjust its output. Feedback is also used by the human brain to control various muscles and joints.

Note: By extension, “feedback” is any response or information about the result of a process.

Note: Feedback is usually a feature of automation.

verb

To surprise and create discomposure: those grades don’t faze her (1830+)

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