Science has changed our lives. Every new discovery is adding a charm to our life. Being human we feel comfortable by using technology.

Researches have been made to provide useful results so that we may not repeat the mistakes done earlier. However many do not get agree in such opinions.

New products are being introduced in the market now a days. Machinery is taking the place of our friends and relatives. But we can not avoid to use new machines.New products are being introduced in the market now a days. Machinery is taking the place of our friends and relatives. But we can not avoid to use new machines.