Company Writer's Guide

Symbols for Units in General Use (Cont’d)

Unit

Symbol

Notes

 

 

 

voltampere

VA

IEC name and symbol for the SI unit of apparent

 

 

power.

 

 

 

watt

W

SI unit of power.

 

 

 

watt per meter kelvin

W/(m•K)

SI unit of thermal conductivity.

 

 

 

watt per steradian

W/sr

SI unit of radiant intensity.

 

 

 

watt per steradian square

W/(sr•m2)

SI unit of radiance.

meter

 

 

 

 

 

watthour

Wh

 

 

 

 

weber

Wb

Wb = V•s

 

 

SI unit of magnetic flux.

 

 

 

yard

yd

 

 

 

 

year

a

In the English language, generally yr.

 

 

 

[For Illustration Only]

B-17