The discovery and understanding of electromagnetic phenomena in general can be traced back thousands of years ago when ancient philosophers were interested in the physical world around them. When amber was rubbed by fur, it could attract small objects; in today's theory, it had been electrically charged. Lightning in the sky of course was the subject of heavenly worship, but complex electromagnetic processes were involved in the natural phenomenon, which is still being studied by scientists armed with the latest equipment. Those natural phenomena led to the recognition of the existence of electric power, yet a truly scientific explanation and quantization was completed a little more than a century ago. Generation and utilization of such power for human life have fully blossomed only in the last few decades. With the proliferation of modern electronic devices, high-power electricity became a daily necessity, and a pocket-sized gameboy, to a seven-year-old, is something that naturally exists, like stars in the night sky.