Assertion: galvanometer | /r/HasAspect | device
Facets:
value: for changing the natural vibration frequency
type: PURPOSE
Source sentences:
text: The maximum sensitivity of a vibration galvanometer is produced when the natural vibration frequency of the movable parts equals the frequency of the alternating current, and for this reason all such galvanometers have devices for changing the natural vibration frequency so that the moving part can be tuned to resonate with the test current.
text: The maximum sensitivity of a vibration galvanometer is produced when the natural vibration frequency of the movable parts equals the frequency of the alternating current, and for this reason all such galvanometers have devices for changing the natural vibration frequency so that the moving part can be tuned to resonate with the test current.