Light-Dependent Resistor (LDR) Unit Subcategory_Filtration Equipment Barlow's Wheel apparatus with neodymium

Barlow's Wheel apparatus with neodymium magnets and a heavy base

providing the standard mid-reach branching wire for 4mm-socket student bench circuits

teaching a whole classroom the principles of vernier-scale reading before students use benchtop-sized calipers

25-inch frame with draining pins for post-wash inversion and drying

opening to 3

Light-Dependent Resistor (LDR) Unit Subcategory_Filtration Equipment Barlow's Wheel apparatus with neodymiumUsed to introduce photoconductivity and light controlled circuits, this LDR drops resistance dramatically when light strikes the cell, contrasting with the dark state high resistance reading.