Gadget and technology blog Gizmodo recently reviewed eight devices touted as ghost detectors. One is Nikola Tesla’s Spirit Radio, which Gizmodo says is built with a simple crystal radio circuit, but has the ability to generate spooky sounds from all kinds of electromagnetic interference. Tesla writes: “My first observations positively terrified me as there was present in them something mysterious, not to say supernatural, and I was alone in my laboratory at night.”Find out how to build your own Tesla Spirit Radio.
Ghost Detecting Gadgets Include Tesla EMI Receiver
