p13.2 - light, infrared, microwaves and radio waves

what is white light compromised of

all the colours of the visible light spectrum

what is infrared radiation used for

carrying the signals from remote control handsets and inside optical fibres

what are microwaves used for

to carry satellite TV programmes and mobile phone calls

what are radio waves used for

radio and TV broadcasting, radio communications and phone calls

what is mobile phone radiation

microwave radiation and radio waves at near microwave frequencies

what can microwaves and radio waves do to human bodies that are harmful

heat the internal parts of people’s bodies

what can infrared radiation do to skin that is harmful

burn skin

IR practical

IR results (which are best and worst conductors)