An example of
A beam of light is shown into a
mirror, almost all of the light energy is reflected. A radio signal
is the same.
Depending on the type of surface it contacts, the
Signal will be either absorbed or reflected.
Metal surfaces and
Dense vegetation like that
found in a jungle will absorb the majority of the radio energy.
Notice in figure 4 that the beam of light is reflected at the same
angle it entered the mirror.
This is also true with a radio wave
reflecting off the earth's surface.