Watt meter

Here is my watt-meter & me, blinded by the flash :)

Telephone Wires & Magnetic Fields

These are pictures of the view from either a tree in my backyard or my dad's workshop roof. In the picture on the bottom, on the very left side you can see a transformer box (is that what its called?) for the power lines and in the picture on the top you can a see the telephone wires running across the picture right over the plumeria trees and under the window of our neighbors house. Basically, you can see telephone wires just about anywhere you go. A telephone wire is a conducting wire, so it has current passing through it, and thus it is an electromagnet. An electromagnet refers to a conducting material that gets magnatized only when a current flows through it. So, when current passes through the telephone wires, they are magnatized and exert an magnetic field. The strength of a magnetic field from a wire is directly related to the current passing through the wire and inversely related to the distance from the center of the wire. The direction of the magnetic field lines for the magnetic field of a wire can be determined using the right hand rule #2: your thumb points in the direction of the current and your fingers curl around in the direction that the magnetic field points. The magnetic field lines are always closed loops.