Electrical Problems for Engineering Students. E-book. Formato PDF William L. Hooper   -  Forgotten Books, 2017  - 

In physical science generally, and especially in engineering, knowledge is of use only so far as we are able to calculate numerical results, and ability to Obtain such results quickly and accurately is to be obtained only by extensive practice. Then, too, the ordinary mind arrives at a clear conception of general principles only by the way of concrete examples. To the aver age student mathematical formulae are vague and uninviting until he has himself made practical application of them.