The effect is called the Lenz Effect. The moving magnet causes small magnetic fields, called eddy currents, to form in the metal (brass, aluminum foil/tube ...). These eddy currents have their own magnetic field (all electrical currents do). This is what is interacting with the moving magnet.
1 Limited use: The Angel Card can only be used in Victoriaâs Secret and PINK stores. 2  While you may also use the card at Bath & Body Works stores, you will not earn Angel Reward points on those purchases.
Years after I worked at Victoria's Secret, I was buying something there and the cashier asked me to open a card. I said, I know you have to ask me three times, but I really don't want to open one, so please don't ask me again.. She gave me an okay, you bitch look, so now I just let people go on their spiels.