P1 - Wireless Communication Flashcards
1
Q
why do the microwaves have to be a certain frequency?
A
because they have to through our watery atmosphere and not be absorbed
2
Q
how does a form of satellite communication work?
A
it sends a microwave up to a satellite 1000s of km above the earth and that satellite sends the wave down to the other form of satellite communication
3
Q
what waves do mobile phones use
A
use microwaves because they can reach satellites in space
4
Q
what is one of the main dangers of telephone masts?
A
your body can absorb them and that is bad for you because your cells may be burnt
