Only certain materials, such as iron, feel a magnetic force. Permanent magnets can come in lots of different shapes and sizes. Bar magnets and horseshoe magnets are two of the most common shapes ...

Magnets are everywhere in our daily lives, even if we don’t always notice them. From holding up notes on the fridge to powering complex machines, magnetism plays a crucial role in technology ...

The fate of an industry is riding on a laser smaller than a grain of salt. Data-storage company Seagate developed this diminutive heat source to help it encode information in ever-greater ...