Electromagnetic Waves Slides - Little Shop of Physics

Unifying Electricity and Magnetism
∇ ⋅ E = ρ
ε 0
∇ ⋅ B = 0
∇ × E = − ∂ B
∂t
∇ × B = µ 0
j + µ0ε 0
The electromagnetic pulse.
An accelerated charge emits a pulse of electric and
magnetic fields. This pulse travels through space.
Maxwell’s equations say the speed should be:
1
v = = 3.00 × 10
ε0µ 0
8 m/s
The electromagnetic wave.
An oscillating charge will emit an electromagnetic wave.
It’s a wave of electric and magnetic fields.
∂ E
∂t
7
8
9