ELECTROMAGNETIC
WAVES
Mobile Phone(s)
, Electromagnetic waves
Electromagnetic waves can travel through the vacuum
of outer space.
Unlike electromagnetic waves, mechanical waves
require the presence of material medium in order to
transport their energy from one location to another.
A material medium is something that a person can feel
and touch: Air is a medium for sound waves, water is a
medium for water waves, solids are a medium for
vibration waves.
A medium is something that someone cannot see or
feel; this is a nonmaterial medium (light, radio waves
etc).
WAVES
Mobile Phone(s)
, Electromagnetic waves
Electromagnetic waves can travel through the vacuum
of outer space.
Unlike electromagnetic waves, mechanical waves
require the presence of material medium in order to
transport their energy from one location to another.
A material medium is something that a person can feel
and touch: Air is a medium for sound waves, water is a
medium for water waves, solids are a medium for
vibration waves.
A medium is something that someone cannot see or
feel; this is a nonmaterial medium (light, radio waves
etc).
