A step closer to self-powered kit is the name given for devices, such as phones that charge when you speak into them, are one step closer to reality. Small devices could soon be powered with nothing more than ambient sound says BBC News, one of the most powerful broadcast of communication.
According to BBC, engineers have doubled the efficiency of piezoelectric devices that harvest energy from movement and vibration. The trick lies purely in the size of the devices: a narrow range of thicknesses around 5,000 times thinner than a human hair. The piezoelectric effect occurs in some crystalline and ceramic materials. Stretching or compressing them causes a separation of electric charge across their width, and that sets up a voltage that can be put to use.
Such piezoelectric materials have been in use for years in devices such as electronic lighters and microphones, where pressure from a thumb or even a sound wave is harvested.
More recently, plans to engineer piezoelectrics that collect energy from footsteps or the motion of clothing have made it to the drawing board. Several clubs even incorporate piezoelectrics into their dance floors, recycling a small part of the energy imparted by clubgoers.
I believe that technology has provided the whole world to develop more advanced economies and has allowed the rise of a lot of activities such as eating and sleeping, going to work or running a business, attending school and doing homework, household chores, and day-to-day stress.
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