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Electromagnetic Radiation

El
ectr
oma gneti
c radi
ati
on t
ravels
as waves.
(Radi
ati
on
li
ter
all
y means
that
i
t
tr
avels
out

r
adial
ly
ie
fr
om t
he radi
us.
We can
see t
his
eff
ect
w i
th
visi
ble…

Page 2

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Thi
s cont
inuous
range
of
w avel
engt
hs
for
EM
w aves
is
cal
led
the
elect
romagnet
ic
(
E M)

s
p ect
rum.
The
elect
romag net
ic
spect
rum is
conti
nuous but
t
he wavelengt
hs wi
thi
n i
t
can
be…

Page 3

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Speci
al
"i
nvi
si
ble"
i
nk can
be
used
for
secur
it
y mar
king
­ onl
y v
isi
ble
under
UV
li
ght
.
C an
be
used
to
fi
nd
counter
fei
t
banknot
es.

Visible light

Thi
s
co nsi
sts
of
7 di…

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