1.82m Wave Form Helix Subcategory_Desiccators illustrating the arrangements that underlie

illustrating the arrangements that underlie water's unusual properties

Large-format 150mm convex glass mirror at 150mm focal length and ~5mm thickness

providing the next picofarad decade up from PH1135N8A for resonance and oscillator work

and an ignition light that fires on compression

demonstrating the principle of resistance thermometry through 4 mm sockets

1.82m Wave Form Helix Subcategory_Desiccators illustrating the arrangements that underlieMetal helix 1. 82 meters long with loops at each end and a 0. 88 inch coil diameter, sized for two students to stretch between them and observe transverse and longitudinal wave propagation.