Electromagnetic Spectrum

Electromagnetic spectrum

Speed of light = 300 000 000 m/s

Radio     Micro   infrared   visible   ultraviolet   X-rays   Gamma 

 Wavelength decrease    --------------->  Frequency increase

High-frequency electromagnetic waves are more dangerous as they are more ionising 

Uses of radio waves
Tv 
Radio

Uses of Microwaves
Phones
satellites
heating up food

Uses of Inferred waves
Heating
Night vision 

Uses of Visible
Fibre optic 

Uses of Ultra-violet 
Energy-efficient lamps
sun tanning beds

Uses of X-ray 
Medical uses

Uses of Gamma
Medical uses

Light

Refraction

Light…