W

Watt (W):

Unit of power or work done at rate of one joule per second or rate of work represented by current of one ampere under a pressure of one volt (volt-ampere).

Wavelength:

The distance measured in the direction of propagation of a repetitive electrical pulse or waveform between two successive points that are characterized by the same phase of vibration (one cycle).

Wiping Action:

The action that occurs when contacts are mated with a sliding action. Wiping has the effect of removing small amounts of contamination from the contact surfaces, thus establishing better conductivity.