Tin foil hat

A tin foil hat is a hat made from one or more sheets of aluminium foil, or a piece of conventional headgear lined with foil, worn in the belief it shields the brain from threats such as electromagnetic fields, mind control, and mind reading. The notion of wearing homemade headgear for such protection has become a popular stereotype and byword for paranoia, persecutory delusions, and belief in pseudo science and conspiracy theories. Foil hats have appeared in the films Signs and Futurama: Into the Wild Green Yonder. Note that "tin foil" is a common misnomer for aluminium foil; packaging metal foil was formerly made out of tin before it was replaced with aluminium.

Tin foil hat

A tin foil hat is a hat made from one or more sheets of aluminium foil, or a piece of conventional headgear lined with foil, worn in the belief it shields the brain from threats such as electromagnetic fields, mind control, and mind reading. The notion of wearing homemade headgear for such protection has become a popular stereotype and byword for paranoia, persecutory delusions, and belief in pseudo science and conspiracy theories. Foil hats have appeared in the films Signs and Futurama: Into the Wild Green Yonder. Note that "tin foil" is a common misnomer for aluminium foil; packaging metal foil was formerly made out of tin before it was replaced with aluminium.