Why do WiFI speeds vary so much? Dr Steve Bagley demonstrates how even a poor signal for one person can affect those with a seemingly perfect signal!https://www.facebook.com/computerphile
This video was filmed and edited by Sean Riley.
Computer Science at the University of Nottingham: https://bit.ly/nottscomputer
Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com