OHAPTEE I
FUNDAMENTAL IDEAS
| 1* The fundamental equations for free aether.
la MaxweU'g electromagnetic theory the Btate of tho aether
in tho vicinity of a point (#» y, *) at time t is specified by mc%ans
of two vectors K and H which satisfy the circuital relations*

19/f
rot #«•--/
08$
and the nolonoidai or soweekss conditions
If right-handed rootangulor are the Bymbolf rok If
thw
vector whono components are of type

the oomponoutn of If boing //*, /fy> JBf
Tho ftyttibol div IJ denotes the tUvoi$onca of i*o. the
The JSP is oalled tho or
and If tht The quantity o the
* Th« art to lit §ym»^dWl fowt to w&eh
by 0, ^*rif 701 1, | W» «ad H,
Wow*, |>» 1W, Sit loiipli Ikwewif 0ttl tt&at * Mt of
10 Wfti ih'Mi- by Mfu*1ul!af!h to SIM a
AM wholt gxtmnd of Pfeyrttoi Optoi, Wvrk* of
(taaO)t f . X4&,
f 'Wt tMM At a»4 noliitlfm In Ijorftnto^i Tim tf
(Hi. t , Iliftt ar<' to »i4 f in
in 01 1>* 1M ih^ nty tt ihol turl of ™t,