Carbon Electrode, 100 x 20 x 5mm, 10-Pack Manufacturer_Economy Glass deflecting visibly in the presence

deflecting visibly in the presence of a charged object to reveal both charge presence and polarity

Wood-based hydrostatic balance with two long pans and one short pan adjustable along a central column

and compass behavior

the diverging curvature softening divergence for subtler virtual-image reduction in optics work

fastened by two wide-pad stainless steel thumb screws under heavy torsional load

Carbon Electrode, 100 x 20 x 5mm, 10-Pack Manufacturer_Economy Glass deflecting visibly in the presenceBulk pack of ten solid carbon electrode bars compatible with the student voltaic cell, sized for whole class electrolysis investigations where every lab group runs its own cell.