Some light energy can be seen and some cannot be seen with the unaided eye. There is one type of light energy that is virtually everywhere in most American cities, but it is invisibl
wavelength so long that it can pass right through buildings, and even through human beings, withou
is used to transmit information long distances, since very little interferes with it, and it can be easily
Humans have used this type of light energy for many years to transmit and receive many different ty
technology to use it is so widespread that it is in almost every modern car, truck, and home.
What type of light energy is this?
A.
radio
Св.
ultraviolet
C
gamma
D. X-ray