Studied by 4 people
Light is part of a continuous electromagnetic spectrum…
Radio
Microwave
Infrared
Visible
Ultraviolet
x-ray
Gamma ray (radiations)
all waves in the electromagnetic spectrum travel….
at the same speed in free space
Use of radio waves
broadcasting and communication
Uses of Microwaves
cooking and satellite transmissions
Uses of infrared
heaters and night vision equipment
Uses of visible light
optical fibres and photography
Uses of ultraviolet
fluorescent lamps
Uses of x-rays
observing the internal structure of objects, materials and medical applications.
Uses of gamma rays
sterilizing food and medical equipment
Effects of excessive exposure of the human body to electromagnetic waves: Microwaves
internal heating of body tissue
Effects of excessive exposure of the human body to electromagnetic waves: Infrared
burns skin
Effects of excessive exposure of the human body to electromagnetic waves: Ultraviolet
cause skin cancer and blindness
Effects of exposure on the human body. Gamma rays
causes cancer and cell mutation
Note 
Flashcard (63)