Physics I

Well, this may be a very lame post. =x but since i got nothing to say and I've got a physics paper coming up tomorrow, I could share some of the physics of guitar. A friend of mine also asked me the same question. Good that I hadn't forgotten my O lvl physics. Sry if i m talking about Physics, but it is just amazing =P

A pickup is made up of a permanent magnet and a coil of copper strings or a solenoid in Physics term. Alnico (alloy of aluminium, nickel and iron) or Ceramic (ferrite) is used for the perrmanent magnet.
                            
The use of the permanent magnet is to magnetise the guitar strings, which is also made of magnetic material, into temporary magnet. As we strum the guitar strings, the now-magnetised guitar strings will vibrate and this vibration will form an induced current in the solenoid. (refer to Physics textbook for answer of why =P). This induced current will go to the amplifier which will then amplify the current and transform it from electrical energy into sound energy. Thus, your guitar produces sound. After all, everything you do in your life is all Physics. Name it, walking, eating, and even playing guitar xD.