Help Topics - V

Vapor

A liquid or moisture diffused or suspended in air.

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Variable noise

Noise levels that change gradually with time and are not constant or steady. Variations might be as large as 10 dB about an "eyeball" averaged notional steady value.

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Vibration

An oscillatory motion of solid bodies described by displacement, velocity and acceleration with respect to a fixed reference position. The movement of a body can cause vibrations to be produced that can be transmitted as unwanted sound waves.

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Vibration isolation

The process reducing the amount of motion passed through a system by the introduction of suitable materials.

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Vibration isolator

A material specifically designed to reduce the level of vibration transmitted from one part of a structure to another part. Springs can be used to isolate vibrations from one part of a machine from another part.

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VOC

Volatile organic compound. Examples of VOC's are isobutylene and other hydrocarbons.

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Volatile

This means a substance is easily converted into a vapor.

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