How wireless internet works?

Question

what form of energy is used to send data wirelessly and how does a computer read this?

Answer 1

googing your title i saw this

http://www.google.com/search?q=How+wirel...

the second result was this

http://computer.howstuffworks.com/wirele...

which is a good explaining stuff website

Answer 2

I think its infrared waves.

Answer 3

Wifi uses 2.4ghz or 5ghz radio waves to transmit the signal.  The receiver then decodes this back into electrical impulses.  For a full explanation check out How Stuff Works: http://computer.howstuffworks.com/wirele...