How does compact disc (CD) work?

How does compact disc CD work

Having a thickness of a mere 1.2 millimeters and a diameter of 12 centimeters, a CD weighs only 28 grams but has the capacity to store 74 minutes of music recording or 783 megabytes data on its 5 kilometers long spiral track. Compact disc mainly comprises of three layers. The topmost layer … Read more

What is meant by a zero watt bulb?

What is meant by a zero watt bulb

Paying our monthly electricity bill is always a concern. That is why we look for ways on how to reduce or maintain a low consumption if possible. There are ways on how we can cut expenses to our power bills and save a few bucks.  The way to start is by comparing … Read more