Believe it or not, strong magnets are used in roller coasters to create an unexpected acceleration at the beginning of the ride. This occurs through the process of electromagnetic propulsion, which is where electrical impulses force magnets between the track and bottom of the train to repel instead of attracting.

While the traditional "lift hill" roller coaster relies on a chain and gravity, many modern "launch" coasters in 2026 are powered by Linear Synchronous Motors (LSM) or Linear Induction Motors (LIM), which use electromagnetism to propel the train. These systems use a series of magnetic stators along the track and powerful rare-earth magnets on the bottom of the train. By rapidly switching the polarity of the electromagnets on the track, the system creates a "traveling magnetic wave" that pulls and pushes the train to high speeds in seconds, eliminating the need for a traditional climb. Beyond the launch, magnets are also used for Magnetic Braking (Eddy Current Brakes). These consist of copper or aluminum fins and permanent magnets; as the train passes through, it creates a magnetic field that provides a smooth, frictionless deceleration. This technology is preferred in 2026 because it has no moving parts to wear down, works even during a power failure, and provides a much more comfortable "hissing" stop compared to old-fashioned friction brakes.