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
Finding Rin Tin Tin Finding Rin Tin Tin Finding Rin Tin Tin is a 2007 Bulgarian–American family comedy-drama film directed by Israeli filmmaker Danny Lerner. Based loosely on historical events, the film is the most recent in a long line that includes the character Rin Tin Tin. The film tells the story of the original Rin Tin Tin, the legendary German Shepherd, found shortly before the end of World War I by American serviceman Lee Duncan as a shell-shocked puppy in Lorraine, France. The dog was taken to America and became the hero of several films made in the 1920s and 1930s. "Finding Rin