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More cards in this set
Card 16
Front
the angle of reflection is equal to the angle of incidence
Back
Card 17
Front
the reason light is transmitted through an aptical fibre is because the fibre is denser than its surroundings
Back
Card 18
Front
core - glass or plastic with higher index of refraction than the cladding. - carries the signal
Back
Card 19
Front
buffer - protects fibre from damage and mositure
Back
Card 20
Front
em spectrum
Back
Card 21
Front
infared light - anything with temperature, tv remote/night vision cameras, burns
Back
Card 22
Front
x-rays - pass through solid objects, medical/scanning luggage, can cause cancerous cells
Back
Card 23
Front
ionising radiation can break molecules into ions (ionisation) this occurs if photons have enough energy
Back
Card 24
Front
radio waves - have the longest wave lengths and the lowest frequencies of thr EM spectrum
Back
Card 25
Front
a transmitter is responsiable for converting an electrial digital signal into a light signal by changing its density and pulse rate
Back
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