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I want to know whether it is posibble to transfer electricity wireless ?
Besides that , it is posibble to generate electricity from earth magnetic fields ?
Besides that , it is posibble to generate electricity from earth magnetic fields ?
It is still a popular thing among hobbyists to build unamplified radios, called crystal radios: http://www.midnightscience.com/I've known that in some developing countries, people living near a radio transmtter station used to have a quite high antena, and then they can hear the radio with a special receiver without a power supply.