Noise Pollution

Noise Pollution   Noise pollution is generally defined as regular exposure to elevated sound levels that may lead to adverse effects in humans or other living organisms. According to the World Health Organization, sound levels less than 70 dB are not damaging to living organisms, regardless of how long or consistent the exposure Read more…

Dynamo

Dynamo A dynamo is a device that converts mechanical energy into electrical energy. The structure of a simple dynamo. A coil made of conducting wire is positioned between the North and South poles of two permanent magnets. When the coil is stationary, no voltage is induced. But when the coil Read more…