By Scott Fullman
Posted 05.04.2005 at 2:00 am 0 Comments
A: You´ve probably heard of the Wi-Fi antennas made from old Pringles cans, but those are tricky to build and often require special connectors and soldering. A much easier option is a parabolic reflector antenna. You can whip one together using an old shoe box, tape and some aluminum foil in about 30 minutes, and it will double or triple the range (in a single direction) of just about any wireless access point with an external stick antenna.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.