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
Tin-Tin Kyrano Tin-Tin Kyrano Tin-Tin Kyrano is a fictional character introduced in the mid-1960s British Supermarionation television series "Thunderbirds". In the original TV series and its film sequels, the voice of the Tin-Tin puppet was provided by actress Christine Finn. In the remake series, due to copyright problems with Hergé's "The Adventures of Tintin", the character's name was changed to Tanusha 'Kayo' Kyrano. Sylvia Anderson, "Thunderbirds" co-producer and character co-creator, writes that Tin-Tin was conceived mainly to "redress the balance" of the "male-dominated" primary puppet cast. The character's name was derived from the Malaysian term for "". The Supermarionation puppet was sculpted