Email a FriendElectromagnetic spectrum (long description)
The electromagnetic spectrum
This text contains a long description of the electromagnetic spectrum diagram for readers with a visual impairment.
Return to the electromagnetic spectrum diagram.
The diagram illustrates a range of frequencies along a horizontal spectrum - from 0 Hertz (i.e. zero radiation) to 1022 Hertz (or 10,000 billion billion Hertz)
(i.e. ultra strong Gamma Ray radiation).
Extremely low frequency radiation
This category encompasses radiation between 0 Hertz and 104 Hertz.
Electric power emits radiation at a frequency of 50 Hertz.
Very low frequency radiation
This category encompasses radiation between 104 Hertz and 108 Hertz.
Radio waves operate at a frequency of about 106 Hertz.
Very high frequency radiation
This category encompasses radiation between 108 Hertz and 1010 Hertz.
Television operates at a frequency of about 109 Hertz.
Microwave radiation
This category operates at a frequency of about 1011 Hertz.
Infrared radiation
This category encompasses radiation between 1012 Hertz and 1015 Hertz.
Visible light
This category encompasses radiation at about 1015 Hertz.
Ultraviolet radiation
This category encompasses radiation between 1016 Hertz and 1017 Hertz.
X-Ray radiation
This category operates at about 1018 Hertz.
Gamma ray radiation
This category operates at about 1021 Hertz and higher.