Classroom Wave Form Helix Spring Subcategory_Bases and Rods sized for low-current circuit work

sized for low-current circuit work below the 1A range where finer resolution matters more than full-scale capacity

and slit plates

sized for a complete length-versus-strength comparison study using one consistent material

and upper airway structures in a single anatomical plane

this 6-inch Alnico bar pair extends field lines visibly along the magnet body for full-class iron-filing demonstrations

Classroom Wave Form Helix Spring Subcategory_Bases and Rods sized for low-current circuit workWide 7. 5cm coil diameter on a 5cm closed length helix, producing slow, large amplitude waves that students can resolve when oscillating the spring by hand for transverse wave studies.