BizSugar.com › Technology › Digital India: Nano Generator, A Pocket Power Houses

The development of an existing technology is measured is terms of increase in efficiency, self-sustainability and/or portability. Since the invention of the light bulb, we have always strived to find a better way to power it. First there was direct current, then alternating current; then the more portable sources like batteries, rechargeable batteries, fuel cells and technologies involving the use of alternative resources of energy (wind, solar, hydroelectric, etc.) to power electrical and electronic devices.