iron and steel known as the ferrous metals are the basic materials of engineering. howover, wide use is also made of nonferrous metals such as copper, aluminium, tin and lead to mention but a few, and their alloys
WHILE THE EXACT NATURE OF ELECTRICY IS UNKNOWN, A GREAT DEAL IS KNOWN ABOUT WHAT IT CAN DO,. BY THE MERE CLOSING OF A SWITCH, BUILDINGS ARE LIGHTED, WHEELS ARE TURNED, ICE IS MADE, FOOD IS COOKED, DISTANT VOICES ARE HEARD, AND COUNTLESS OTHER TASKS-ORDINARY AND EXTRAORDINARY- ARE PERFORMED
You are fortunate to live in an age in which th opportunity exists to study the electron. new discoveries, developments and applications in electronics almost daily open a promising vista of unlimited opportunities for the creative scientist, as well as for the skilled technician. we are livin in a truly scietific age
It contains fundamental information on the theory and calculations of direct and alternating current circuits and on magnetic circuits.