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.
Fees arenât a concern, but interest is. The Victoriaâs Secret Card does not charge an annual fee, so you wonât feel any pressure to get your moneyâs worth. You should, however, make sure to pay your bill every month. Because Victoria is hiding a Secret in her card terms, and itâs a 25.49% APR.