Bar Magnet on Compass Board

Place a compass on the board and ensure it can rotate freely. Move a bar magnet near the board, but not in direct contact. Observe how the compass needle aligns with the magnetic field lines. The compass needle will point towards the magnet's north pole, indicating the direction of the magnetic field. By moving the magnet around, you can visualize the magnetic field lines and their direction using the compass needle's orientation.

將指南針放在板上並確保其可以自由旋轉。將條形磁鐵移到板附近，但不要直接接觸。觀察羅盤指針如何與磁場線對齊。羅盤指針將指向磁鐵的北極，指示磁場的方向。透過移動磁鐵，您可以使用羅盤針的方向來視覺化磁力線及其方向。