magnetic needle

A **magnetic needle** is a small, magnetized pointer that aligns itself with the Earth’s magnetic field, commonly used in compasses for navigation. It is essential for determining direction, helping travelers, hikers, and sailors find their way by indicating magnetic north. Magnetic needles are often made of steel or other ferromagnetic materials and are balanced on a pivot to rotate freely. This simple yet effective tool plays a crucial role in geography, navigation, and various scientific applications.