What is digital and analog mean ?

What is the meaning of PIN and PUK ?

Personal Identification number (PIN) are given out with any new contract by telephone companies and others(e.g credit car…

What is the difference between glaical ice (Glacier) and Normal ice ?

The difference here lies in the air content. Ice cubes in the freezer compartment form simply by freezing, so that a lot o…

What is a chemical element ?

Chemical elements correspond to the different atoms occurring in the natural world. The chemical properties of element is …

Which force occur in nature ?

Strictly speaking there are only four fundamental forces are in nature : Gravity(gravitational force), The electromagnetic…