SAN FRANCISCO (KGO) -- Few of you have probably heard of knob and tube electrical wiring. But, it turns out you should know ...

First, turn off power to the electrical device fed by the broken ... like you might find on lighting, use the wire nut/gel-filled tube style. Twist on the wire nut, plunge the connector into ...

A vacuum tube is just that ... (and it was promptly dubbed the "Edison effect") was that electrical current doesn't need a wire to move through. It can travel right through a gas or even a ...