Building A Simple Homopolar Motor
A homopolar motor is very easy to build. A permanent magnet is used to provide the external magnetic field in which the conductor will turn, and a battery causes a current to flow along a conducting wire. It is not necessary for the magnet to move, or even to be in contact with the rest of the motor; its sole purpose is to provide a magnetic field that will interact with the magnetic field induced by the current in the wire. However, the magnet must be made of a conductive material if it is to be used to complete the circuit powered by the battery. One can attach the magnet to the battery and allow the conducting wire to rotate freely while closing the electric circuit by touching both the top of the battery and the magnet attached to the bottom of the battery.
Read more about this topic: Homopolar Motor
Famous quotes containing the words building a, building, simple and/or motor:
“History is a child building a sand-castle by the sea, and that child is the whole majesty of man’s power in the world.”
—Heraclitus (c. 535–475 B.C.)
“I love art, and I love history, but it is living art and living history that I love.... It is in the interest of living art and living history that I oppose so-called restoration. What history can there be in a building bedaubed with ornament, which cannot at the best be anything but a hopeless and lifeless imitation of the hope and vigour of the earlier world?”
—William Morris (1834–1896)
“If, then, we would indeed restore mankind ... let us first be as simple and well as Nature ourselves, dispel the clouds which hang over our own brows, and take up a little life into our pores. Do not stay to be an overseer of the poor, but endeavor to become one of the worthies of the world.”
—Henry David Thoreau (1817–1862)
“This biplane is the shape of human flight.
Its name might better be First Motor Kite.”
—Robert Frost (1874–1963)