times I have extolled the high quality of QST authors' knowledge and writing skills.
H. Ward Silver
writes the "Hands-On
" column which usually features circuit and system design and theory topics. It often includes, gasp, mathematics.
His July 2013 article is titled "Phasors, Part One." It promises to be a good series. The last paragraph says, "There
is a final way to describe the signal - the exponential form in which it is represented as V ejΘ
This form comes from the mathematics behind Euler's equation in which the coordinates of our points are miraculously
shown to be equivalent to ejΘ
=cosΘ +j sinΘ. The serious and beautiful math behind
this equation lies at the heart of much electrical engineering and leads to the jaw-dropping Euler's identity: ejπ
= -1 which unites the two most widely used transcendental number (e and
), imaginary numbers (j), negation and
unity. Not bad for a moving point in a simple circle, huh?" Beautiful. After reading it Melanie asked why my eyes
were suddenly red. "Allergies," I explained.
Posted June 2013