The field theory applies in many principles of technology. From communications and transportation and all the way to entertainment. Today, entertainment is a big part of our lives. It includes roller-coasters, satellites, TVs, sound and much more. Sound, or more specifically speakers, have started from the plain wooden boxes, and have traveled a long way to reach today's technology. Today, speakers are built much stronger, with better designs, and higher capability.
             As the technology continues to emerge into entertainment, speakers improve and get even better. Today, a few year study and enhancement in technology makes it possible for speakers to reach a new era. A technology still developing has come out with electrostatic loudspeakers (ESLs) which are quite different from the current speakers. Mainly, because they do not use magnets. They use static electricity. But before we step forwards into this new era, lets understand the speakers we use today. These speakers are called electromagnetic speakers. They are built from a plastic cone (usually plastic) which is attached to a metal which is wrapped around with a wire. Around that a magnet is placed. When the music is not playing, the cone stays in place and no sound and is created. When the music is playing, it is converted into electricity and travels through the wire, hence charging it. Because, the charges constantly switch from positive to negative and vice versa, they are pushed back and forth by the magnet. Because of the movement, sound waves are created.
             Electrostatic loudspeakers, take a step back from the rules of magnets, and use the most basic laws of physics. Electrostatic loudspeakers are made of three layers. They are made of a coated diaphragm, which is sandwiched by two stators. The diaphragm is one of the three key components of the speaker. It is an extremely thin film (1/10th of human hair) , whose weight is irrelevant. The diaphragm is the reason why ESL s...