Waves are important in hospitals
as well. For example, doctors use
X-rays. This is another type of
electromagnetic wave. X-rays can
pass easily through skin but not
very easily through bone. X-rays let
doctors see inside our bodies.
And without waves, we would not
be able to see. Light waves bounce
off objects. Then the waves go into
our eyes. This allows us to see. We
use waves every day!
