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.
Plastic 101. Credit card â You can use a credit card to buy things and pay for them over time. But remember, buying with credit is a loan â you have to pay the money back. And some issuers charge an annual fee for their cards. Some credit card issuers also provide âcourtesyâ checks to their customers.