Comment on Freevolt: RF energy harvesting to power the Internet of ThingsComments−bewo00110yThis technique was already used in the 1930s by people living close to the powerful AM transmitters in Berlin and Hamburg to run electric lights. It was outlawed, though.
Comments
This technique was already used in the 1930s by people living close to the powerful AM transmitters in Berlin and Hamburg to run electric lights. It was outlawed, though.