| http://www.w3.org/ns/prov#value | - If you plug an HDMI cable into the back of your TV and leave the other end floating, you have created an antenna, and not only will the electro-magnetic field created by the electrical wires in your house be picked up, so will any radio and television signals passing through, including cell phone, wi-fi, et cetera, because these are also AC, just at a higher frequency than the wall socket's 60Hz.
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