EM spectrum
EM waves
Gamma, X-rays, UV, light, infrared, micro, radio
Similarities
(Smallest wavelength to longest)
carry energy
can travel through a vacuum
Differences
Visible
The travel distances
Visible light
Violet, indigo, blue, green, yellow, orange, red
(smallest wavelength to longest)
Speed of waves in a vacuum = speed of light
Gamma rays
radioactive decay
low ionising
High penetrating power
Can be used to destroy cancer cells
Used to sterilise food and medical equipment
Can cause cancer, mutation
Used for optical fibres and photography
X-rays
Used for observing the internal structure of objects and materials, including for
medical applications
Ultraviolet light
Used for fluorescent lamps
Causes damage to surface cells and causes blindness
Infrared
Used for heaters and night vision equipment
can cause skin burns
Microwaves
Used for cooking and satellite transmissions.
Can cause internal heating of body tissue
Radiowaves
Used for broadcasting communications
