Pages in this set

Page 1

Preview of page 1
Wireless Signals

Wireless signals uses electromagnetic radiation, to
transmit signals e.g. Wi ­ Fi, Laptops, Sat Nav, Mobile
Phones, Remote Controls and IPods

The advantage of this technology is that they :

Are portable
Can be used anywhere
Available 24 / 7

Most communication is by microwaves and radio waves

Page 2

Preview of page 2
Communications can be affected

Diffraction ­ where the waves spread out resulting in signal loss

Refraction ­ Where different densities / layers in the
atmosphere cause changes in direction

Interference ­ Where radio stations transmitters transmit on
different frequencies

Distance ­ Each transmitter along the the route causes
reduction
in…

Page 3

Preview of page 3
How satellites work

Page 4

Preview of page 4

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »