• Electromagnetism E r ,t , Br ,t
• Maxwell's equation
∯
s
a E⋅d A = Q =
∰
P rd r Gauss' law for electric field
∯
B⋅d A = 0 Gauss' law for magnetic field
∮
E⋅d l = − d Bd t Faraday's law
∮
B⋅d l = 0I = 0∯
J⋅d A Ampère's law• Continuity equation
∫
V
∇⋅ J = − d d t
∫
V
d = −
∫
V
∂
∂t d => ∇⋅J =− ∂
∂t
• Nslit interference
I =V EB=E
1 21
2∣E∣2 , E =E1E2EiEN
Ei= A0
xiNsin t−k xi = A0
xiNsin[t−k xi−k b
N i−1sin ]
A3sin3= A1sin1A2sin 2
E = ab = 2Rsin A
2 , R=ab
=A0
=
2 , sin
2
max , d sin
d sin =0 => tan i=i
Eixi,t = A0
N xieit −k xi
E =
∑
i =1 N
Eixi,t= A0
N x0ei t− k xi
1e−i ANe−i N
−1
N A
1−e−i 1−e−i
N
=1−cos=2sin2 2
• Field energy
electric field: uE=E2
2
magnetic field: uB= B2 2
Energy of EMwave : U, momentum: p
=> U p =c
• Photoelectric effect
particle wave
photon EM wave
U = Nh f f ,,h0,B0
p= h U= pc
• Quantization condition
L=[l l1]
1 2ℏ
• Schroedinger wave equation
i ℏ ∂
∂tx ,t = − ℏ2 2 m
∂2
∂x2 x ,t V xx ,t
(1) ∣x ,t∣2 is the probability of finding particle between x~ xd x
(2) Normalization condition:
∫
−∞
∞
∣ x ,t∣2d x = 1