DATE
Laws
1. Reflected aay lfes ia dhe plane kerermed b
aay and Ahe ad
he nggmal dzmun at he poiot
poiad of
eilher Sde of
fnci denie and getlechaa aầe equal
equal (12
2-Angleo
2.
Lacs ekiactfa
Reaacted theplane feemedby inaicka
and the naemal dacn atm the pofo t
ciHhes side of the
io cdence 4 and two oay ae
naemal,
Angle cf incikent Ce,) and angle f aeaacian Cal
aấe velated by Snell's law gitn
cuhece ni M e)actian ndices d medim g&2.
Elecfaomagnetic cwae
Ware
Nave hát ase Cased b the accelealton of
choged gnlele and cabist elechot od
maghetf field vibeatag st at aigid
angles to each
each otherp and to the dection
c propgaltan aale called electaomaanetic (E
Range ct frequence d visible Iiabt is
to 9-9 xio HZ
1postutates t Ncudan' Corpslulai theozy
lght paricles ie. corpuscle
whth
oth ae hard elaste md massless.