Metals are the only substances that are magnetic. But some metals are magnetic and some are not. The most common magnetic metal is iron. You don't see too many objects made of pure iron but you do see ...

A permanent magnet is always magnetic. It has an invisible magnetic field. Only certain materials, such as iron, feel a magnetic force. Permanent magnets can come in lots of different shapes and ...

With germs crouching on hands, tables, books, toys — essentially, all around, despite frequent use of hand sanitizers and ...

Even though the tape is self-adhesive, I like to dab a bit of hot glue on it to ensure it stays on the magnet. These are ...