Dove apics.
Huugens inciple
D L0areonti The locus oE all he paxticles vibraten,
in the same _phage, The directonof motion of
ghtlsay is aong he nosmal to the waehont
Waso, bont Sotsce Ampaitude
Vaxiahon
Gatancity
vaatio
9 Sphexical Pt, So [ne Aal
lgindical lineaxlslit A<
I : Congt
2) Plane Extended Jange -A= Const.
Huggens constuchon
Each pt. ona wauefont isia souKte of spheical
wavelet hat spreads out at cuaia speed
Ata Jatex time, shape of ave hont is the
line tagent tota al
all asawelets
dhtextexence of lgtbt cwes
oCoherent Souxcea Sousces cahich pDduce wnwes
of ae. aith const. phage dift, waye
"
Jnike sound' waes, to independent ethd
Cannot be coheent
, Fox incohexnentesutart intensiy isT I +I
The cohexrent Sousce ane poduced hom a
SOKCe ofot light by follbcoing mehods sìngle
D Division oF_ avefaont Don by y.D.S.fregnels
biprisnand Llogds miaox, ete
aDivision of Ampl1fude :- lsually by partial reflechin
B transmision ata bonda, at t happens in
thin film_ intexfeenee Neaston's ings, etc.
dntensty of tuo soLKLE. intexference
I=I+Te t2IL, cOS
Fo incoherent Sousce
so g. value of cos h o &
I I tIe
* Thephage diE produced het
at a ecmmen pt. congissof asziing
Ddaital_phace dif CoJ
a Phase diff pradueed due o path dift. Lo)
Tatal phase dift
)Maximno i- Sntexfexence produced when = 2nx
2 MniMa i Ax=(n
Imà =AI-I)?
Huugens inciple
D L0areonti The locus oE all he paxticles vibraten,
in the same _phage, The directonof motion of
ghtlsay is aong he nosmal to the waehont
Waso, bont Sotsce Ampaitude
Vaxiahon
Gatancity
vaatio
9 Sphexical Pt, So [ne Aal
lgindical lineaxlslit A<
I : Congt
2) Plane Extended Jange -A= Const.
Huggens constuchon
Each pt. ona wauefont isia souKte of spheical
wavelet hat spreads out at cuaia speed
Ata Jatex time, shape of ave hont is the
line tagent tota al
all asawelets
dhtextexence of lgtbt cwes
oCoherent Souxcea Sousces cahich pDduce wnwes
of ae. aith const. phage dift, waye
"
Jnike sound' waes, to independent ethd
Cannot be coheent
, Fox incohexnentesutart intensiy isT I +I
The cohexrent Sousce ane poduced hom a
SOKCe ofot light by follbcoing mehods sìngle
D Division oF_ avefaont Don by y.D.S.fregnels
biprisnand Llogds miaox, ete
aDivision of Ampl1fude :- lsually by partial reflechin
B transmision ata bonda, at t happens in
thin film_ intexfeenee Neaston's ings, etc.
dntensty of tuo soLKLE. intexference
I=I+Te t2IL, cOS
Fo incoherent Sousce
so g. value of cos h o &
I I tIe
* Thephage diE produced het
at a ecmmen pt. congissof asziing
Ddaital_phace dif CoJ
a Phase diff pradueed due o path dift. Lo)
Tatal phase dift
)Maximno i- Sntexfexence produced when = 2nx
2 MniMa i Ax=(n
Imà =AI-I)?
