Learn How hydroelectric generating stations produce electricity. ... more.

How Does Electricity Works? Check out the Video Learn and understand the working of Electricity ... more.

This video is about electrical wires. It describes common types, configurations of wire, and wire terminology. It explain the gauge system of rating wire size (diameter), circular mils, current capacity, and others. ... more.

Change a normal 9v battery into a life saver. If you have ever run out of juice on your phone and could really use a quick charge then you need a USB battery. Shopping list: 1 5.1v zener diode 1 330-ohm resistor 1 9v battery connector 1 9v battery solder and soldering iron (you can get all of this at radio shack) Instructions: 1. Solder the Zener diode to the left and right USB connecto... more.

This video describes Resistor Color Codes and how to read them. It relates Resistor Color Codes to scientific numbers and engineering notation. ... more.

The Samsung HM3500 Bluetooth Headset offers up something a little different. Something for driving and a little extra goodness for music. ... more.

A thorough video comparison of the Motorola DROID X and Apple iPhone 4. Just like the original Motorola DROID, the DROID X is presented as one of the smartphones to challenge the might of Apple's iPhone by attacking some key areas where the iPhone has been unable to capture. ... more.

The Samsung Captivate I897. The phone will definitely bring Android's full glory into gear for AT&T's customers who have longed for a full figured device that kicks things up a notch. ... more.

The HTC Smart. Aiming to attract attention with the new Brew mobile platform and solid build quality, it is HTC's first foray into the feature phone universe. ... more.

the Samsung Gravity 3 by T-Mobile USA. The Samsung Gravity 3 T479 is- wait for it- the third Gravity phone to be released by T-Mobile in just the last year and a half. ... more.