A "'single coil pickup "'is a type of magnetic transducer, or humbucking " pickups.
2.
A balanced armature is a sound transducer design primarily intended to increase the electrical efficiency of the element by eliminating the stress on the diaphragm characteristic of many other magnetic transducer systems.
3.
This air-bearing head, also known as a magnetic transducer, had the ability to move freely, which enabled the disk to be recorded and read from a vast number of different positions.
4.
The gamma rays traveled through a phase of the speaker vibration, hence with the speed of the emitting sample and therefore the Doppler shift . To compensate for possible systematic errors, Pound and Rebka varied the speaker frequency between 10 Hz and 50 Hz, interchanged the source and absorber-detector, and used different speakers ( ferroelectric and moving coil magnetic transducer ).
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