How LED's work - A light-emitting diode (LED) is a two-lead semiconductor light source. It is a pn-junction diode, which emits light when When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes wi
Need an emergency recharge for you phone? Do you have a car charger handy? Or a 9 volt battery and a quarter? Then you can recharge your phone during a power outage or if you're somewhere it isn't convenient
How Do I Use Jumper Cables? all Auto Club.LOL Every girl should know how to do this AND change a tire. Do yourself (or the girl in your life) a favor and print this out, laminate it and put in the car so it will be there when she needs it!