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Which Type of Microphone Usually Requires a Battery to Work

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Which type of microphone usually requires a battery to work?


Definitions:

Velocity

A physical vector quantity that represents the rate of change of position of an object with direction.

Flexibility

The ability to adapt to new, different, or changing requirements, conditions, or situations with ease and speed.

Lens

A curved piece of glass or other transparent materials used in optical devices to converge or diverge light.

Visual Field

The total area in which objects can be seen in the peripheral vision while the eye is focused on a central point.

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