Recent content by Roar

Electromagnetic fields continue like matter-- they keep going until they're attenuated or reflected. consider a light bulb-- it travels forever like stars do. If you ONLY want an emission to go a certain distance, you simply use an absorber or reflector. What you use is determined by the...

It IS somewhat difficult to measure the voltage drop in a ground leg caused by there being a high resistance connection but since you're near plumbing which is supposed to be connected to ground in addition to usually being grounded through several other grounded items any water pipes should...

It IS somewhat difficult to measure the voltage drop in a ground leg caused by there being a high resistance connection but since you're near plumbing which is supposed to be connected to ground in addition to usually being grounded through several other grounded items any water pipes should...

In American electrical wiring there is a black covered wire that is hot in relationship to the white and green wires. the reason there are two of these is that the white one is to provide the other side of the electrical circuit. current flows back and forth through these two in that it is...