August, 2008

“Semiconductors are solid materials, either non-metallic elements or compounds, which allow electrons to pass through them so that they conduct electricity in much the same way as a metal”. Semiconductors possess the following characteristics:

1. The resistivity is usually high. 2. The temperature co-efficient of resistance is always negative. (more…)

What is Electricity ?

Electricity is made up of atom matter.  To understand that you have to understand the basics of atomic structure. Matter is commonly made up of mass which occupies space.  This mass can become and take into form several different states: solid   liquid   gas   plasma Matter

All matter is comprised of molecules. A molecule is the smallest part of matter which can exist by itself. It contains one or more atoms, which are comprised of protons, neutrons and electrons. (more…)