Never, ever put aluminum foil in the microwave. Never. This is not a myth. It will cause sparks, fire, and possibly a small explosion. The foil acts like an antenna for the microwaves.
But why? Because it’s too good a conductor. The high-voltage microwaves create huge currents in the thin metal. The metal gets hot instantly and arcs like a tiny lightning storm. Your leftover pizza will not appreciate the show.
However, you can use foil safely in a low-voltage circuit. Try this: take a 9-volt battery and touch it to a piece of foil. You’ll feel it get warm. That’s resistance converting electricity into heat. It’s a miniature heater!
The Tin Foil Hat Myth
Let’s address the elephant in the room. The tin foil hat. People wear it to block mind control rays. Does it work?
Scientifically? No. Aluminum foil is a conductor, not a magnetic shield for brain waves. In fact, if you wear a foil hat, you might amplify certain radio frequencies. You’d hear more static, not less.
Why does aluminum foil conduct electricity? - Henan Huawei Aluminum Co
But it does block radio waves if you wrap a device completely. That’s why spies use foil-lined bags for their phones. It creates a Faraday cage. So your hat blocks cell signals, not government thoughts. Disappointing, right?
