Tin foil hat radio with a metal bucket. The AM radio is completely inside a metal enclosure. This leads to a noticeable reduction in signal strength received by the AM radio. The efficiency of a metal enclosure in blocking electromagnetic radiation depends on the thickness of the foil, as dictated by the "skin depth" of the conductor for a particular wave frequency range of the radiation. For half-millimetre-thick aluminum foil, radiation above about 20 kHz (i.e., including both AM and FM bands) would be partially blocked, although aluminum foil is not sold in this thickness, so numerous layers of foil would be required
What We Made mixtape ("Who Needs Sunshine?", "Take What I Want" and "Mr. Invisible"). Example at Discogs What We Made What We Made is the debut studio album released by British recording artist Example. The album was initially due for release in June 2007, as stated on the back of the "We Didn't Invent the Remix" sleeve, however the album was delayed and was finally released on 17 September 2007. "What We Made" was later followed by the "What We Almost Made" mixtape. It includes the singles "What We Made", "You Can't Rap", "I Don't Want To" and "So Many Roads" (a track