narayana murthyprinciple is simple piezo electric crystals are meterials which convert mechanical energy intlo electrical energy. That means how much stress you produce on them that much energy will be...

yeah ... i just now about the principle only , so please tell me about working procedure briefly . As am a student , i would like to make a...

heyy .. i'm on research on generation of power through foot steps ... is there anyone who can assist me ?????