FUNDAMENTAL
If ^ is a constant ami ^iK^^H9 bo wjputted an
energy per unit volume, the change in tho distribution of
energy can be described by
of a Haw «r und n low*
unit volume of magnitude *JSF» due to the*
electric energy into heat (Joule's boat)*. If & dwm not dqi
on the instantaneous value of H no tbat p in not a
there is a loss of energy Am to
/I itiay <
upon H alone but not bo a tangle-valued fumition of I/*
sequently in a cycle of
|(/JJ1I) Ii not xero ament
taken as the heat par unit volumo dawttifml during
description of the cycle. Notice that

KH.dB) « - /(^ * i/T) round a «y«U%
and
is always positive since the value of II tbr a
valw<
JHT is greater when JGT in The t»x|n*rimontal
and the accompanying theory am dm) to II i
independently in much to J, A.
l^hom the name was to
' { 1 8. Solution of the for
material medium.
<r, /i| t «P0 iit*I Af, II
* of tht J
cif I, if wt
|VQ Sf
|r w M w.*, If a»
f, If now as the oc»ajpl«x v»»tow of whuth fclwy w
formerly the real pairts, the diff«r<!»tial «H{UiitHtiM< to bt*

,U '|f' we
may be Halved by patting
. . Jf-rot 0 ±gnwl div H i Ml ........ ,...(,
;!* a solution of the eqwution A****1** «;0,<«id may
' ff^tT. •."•.'• , ,—
Vol. 1, pp. W7-.-IBX.
' '
,
ii (1^8), p,
<MI|) Xwvtf, 'itMM^n IN. I

<»»(iotA«-Jlf»taJ». London rlSSSl, ' ,/ . , '/