uses of electromagnetic waves Flashcards
(29 cards)
Uses radio waves
Communication (radio and tv)
Uses microwaves
Heating food, communication (wifi)
Uses infrared
Remote controls
Fibre optic communication
Thermal imaging
Night vision
Heating or cooking things
Motion sensors
Electrical heaters
Infrared cameras
Uses visible light
Seeing
Photographs
Optic fibre communication
Uses ultraviolet light
Security marking (fluorescence)
Fluorescent bulbs
Suntan
Sterilisation
Uses X-ray
X-ray medical imaging
Uses gamma rays
Sterilising medical equipment
Treating cancer
Danger radio waves
No danger known
Danger microwaves
Possible heat damage to internal organs
Danger infrared
Skin burns
Danger visible light
Possible eye damage
Dangers ultraviolet light
Possible eye damage
Sunburn
Skin cancer
Dangers X-ray
Kills cells
Mutations
Cancer
Dangers gamma rays
Kills cells
Mutations
Cancer
Wavelength radio waves
> 10^-1
Wavelength microwaves
10^-1 - 10^-3
Wavelength infrared
10^-3 - 7x10^-7
Wavelength visible light
7x10^-7 - 4x10^-7
Wavelength ultraviolet
4x10^-7 - 10^-8
Wavelength x-ray
10^-8 - 10^-12
Wavelength gamma
10^-12 - 10^-16
Frequency radio
< 3x10^9 Hz
Frequency microwaves
3x10^9 - 3x10^11 Hz
Frequency infrated
3x10^11 - 4.3x10^14 Hz
