A German-born American physicist and Nobel laureate, best known as the creator of the special and general theories of relativity and for his hypothesis with the "particle nature of light". He is said, to be the most well known scientist of the 20th century. Einstein was born in Ulm on...

To Teach for Test, to Train for skills or to Educate Good teachers are like conductors of orchestras, who lead their whole orchestras to work on the same piece of music, and at the same time attend to the individuality of players of different instruments. In face of a large size of class and rigi...