meters can be
detected by the cells in the retina of the eye and we call that ``light''
between 1000 and 0.5 meters
is used to transmit radio and television signals.
meters (microwave) is
absorbed by water molecules (``absorbed'' means the energy of the
E-M radiation is transfered to the water molecules, they heat up
and your leftover burrito gets hot in the microwave oven).
meters (infrared)
can be sensed with your skin (but not eyes).
meters (ultraviolet)
activates pigments in your skin which cause suntans and trigger skin cancer.
Ozone in the upper atmosphere effectively blocks much of the UV radiation
from the Sun.
meters (x-rays)
can penetrate flesh, but not bones.
``kilo'' 
``1000''; ``hertz'' 
