Please enable JavaScript.
Coggle requires JavaScript to display documents.
The Electromagnetic Spectrum (Uses and Applications of Electromagnetic…
The Electromagnetic Spectrum
Electromagnetic Waves
The electromagnetic spectrum extends from low frequency, low energy waves to high frequency, high energy waves
Travel at the same velocity (the speed of light) in air or a vacuum.
Transverse waves
Uses and Applications of Electromagnetic Waves
Visible light
Fibre optic communications
Ultraviolet waves
Energy efficient light bulbs, security marking, sunbeds
Infrared waves
Electrical heaters, cooking food, infrared cameras
X-rays
Medical imaging and treatments
Microwaves
Satellite communications, cooking food
Travel in straight lines through the atmosphere, making them ideal for transmitting signals to satellites in orbit and transmitting them back down to receivers
Gamma rays
Sterilising food, treatment of tumours
Most energetic of all electromagnetic waves and can be used to destroy bacteria and tumours
Radio waves
Television, radio, Bluetooth
Low energy waves, therefore not harmful, making them ideal for radio transmission
Radio Signals
Hazards of Electromagnetic Waves