Tin foil hat validity, as the effect of strong radio waves has been documented for quite some time. A well-constructed aluminum foil enclosure would approximate a Faraday cage for parts of the body enclosed by metal, reducing the amount of radio frequency electromagnetic radiation passing through to the parts of the body covered by the foil. Unlike a foil hat, a Faraday cage is a complete enclosure. A foil hat does not protect the face, and other uncovered areas of the body are not protected. A common high school physics demonstration involves placing an AM radio on aluminum foil, and then covering the
What Love Is Made Of it in "Little Red" (2014). Upon its release, "What Love Is Made Of" received generally favorable reviews from contemporary music journalists, who favored the composition and Katy's distinctive vocal performance. It peaked at number 21 on the UK Singles Chart, and entered three other charts, reaching the top 40. To promote the song, Katy performed it live at the BBC Radio 1Xtra Live special and at her headline set during the Wireless Festival. Emil Nava also filmed and directed a music video for the song which was deemed similar to film series "The Fast and the Furious". In April 2011,