1. By :
Yoga Wahyu Sasongko

2. Electromagnetic waves are waves that
result from changes in the magnetic field
and electric field respectively, where the
vibration direction of the electric field
vector and the magnetic field vector
perpendicular to each other

3. Maxwell theory
 "If changes in the magnetic field can generate an
electric field, the opposite changes in electric field
can produce magnetic fields"
changes in magnetic
flux Changes in the electric field

4. characteristics of the wave
elecromagnetic
 Changes in Electric and Magnetic Field occurs at
the same time
 electromagnetic waves do not have a cargo
 E and B directions perpendicular to each other
and both perpendicular to the direction of wave
propagation
 Can experience reflection, refraction,
interference, diffraction, polarization

6. The propagation velocity of
electromagnetic wave
 The rate of electromagnetic wave with the rate of the
light in the vacum. However, the length of wave ang
frequency of electromagnetic wave not the same as
the light.
 The relationship betwen the wave and the frequance
wave is as the following
c=f
C = The propagation velocity of electromagnetic wave (3 x 108 m/s)
 = wave length (m)
f = frequence (Hz)

7. Exemple :
A radio wave is emitted at a frequency of 15x104 Hz .
Determine the wavelength of the emitted!
Answer :
c  f .
c

f
3x108 m / s

15x104 Hz
  2000 m

8. _THANK YOU VERY MUCH