via Guardian UK The beating of a patient’s heart, the shudder of a tube train and the pounding of thousands of commuters’ feet on crowded platforms are being exploited as new sources of power. Engineers and scientists are developing tiny generators that turn the kinetic energy of everyday movements into electricity which can then power sensors or provide electricity for remote installations. The technology, known as power harvesting, is already being tested in helicopter frames, the floors of di

Read more from the original source: 
How the Beat of Our Feet Can Generate Power