Reference Terms and Units

This article is for the conference on Monday January 11

Variable	Description	Unit variables	Units
${\vec {E}}$	Electric Field Intensity	$V/m\,\!$ or $N/C\,\!$	Volts per Meter or Newtons per Coulomb
${\vec {D}}$	Electric Flux Density	$C/m^{2}\,\!$	Coulombs per Meter squared
${\vec {H}}$	Magnetic Flux Intensity	$A/m\,\!$	Amps per Meter
${\vec {B}}$	Magnetic Flux Density or Magnetic Induction	$T\,\!$ or $W/m^{2}\,\!$ or $G\,\!$	Tessla or Watts per Meter squared or Gauss'

Relationships

${\vec {D}}=\in {\vec {E}}$

• In free space:

• $\in _{0}=1/(36*\pi )*10^{-9}\,\!$ F/m

${\vec {B}}=\mu {\vec {H}}$

• In free space:

• $\mu _{0}=4*\pi *10^{-7}\,\!$ H/m

Read By

John Hawkins

Comments and questions:

• I love the article on units. I hate these units where I don't know what applies to what or what comes from what. Good idea. I'm also interested in the derivation of them. Would you be interested for me to contribute with the derivation of some of these?

• I think Tesla are equivalent to $Wb/m^{2}\$, Webers per meter squared.

• (It doesn't really matter, but the character you're using for epsilon is actually the set inclusion operator. \epsilon or \varepsilon is technically correct.)