About This

• This professional solenoid model intuitively demonstrates the magnetic field produced around DC current-carrying wires, and clearly presents the inherent relationship between magnetic field direction and current direction in electromagnetic physics.
• Upgraded with multi-turn coil structure instead of ordinary single-stranded wire, it effectively strengthens magnetic induction intensity, makes magnetic field arrangement more distinct and greatly optimizes the overall demonstration effect.
• Adopts high-transparent integral material, which allows clear observation of internal magnetic field changes. Avoid friction to maintain permanent transparency; cut off power in time after induction lines take shape to prevent high temperature damage.
• After power connection, the magnetic powder around the solenoid will automatically arrange along magnetic induction lines. Small magnetic needles can be placed at multiple positions to accurately detect and verify the actual magnetic field direction.
• Changing the input current direction will synchronously reverse the layout of magnetic induction lines, fully complying with the right-hand screw rule. It is an essential auxiliary device for electromagnetism teaching, laboratory research and principle popularization.