A little girl and her father were crossing a bridge, the father was kind of scared so he asked his little daughter that sweetheart, please hold my hand so that you don't fall into the river. The little girl said no dad, you hold my hand. What's the...

We have often heard people saying at times that "If you are not first, you're last", this sounds to be a bit out of meaning like if in a car  racing competition people  might think that if not first then second, third and so forth. So where...

Air conditioning refrigeration (ACR) is becoming much popular these days, it is considered to be one of the greatest engineering achievements of the 20th century. ACR is one unit for several functions including heating, cooling, dehumidification,...