Light-Dependent Resistor (LDR) Unit Pack Size_12 Three-part color-coded human skull model

Three-part color-coded human skull model differentiates bone regions and sutures for detailed cranial anatomy instruction

and ice-pail induction

this enhanced optical bench set ships with a lamp housing and a matched complement of optical components

sized to mount alongside a tone generator for converting electrical signals into audible tones during sound-wave demonstrations

75-inch metal bell in a plastic shroud

Light-Dependent Resistor (LDR) Unit Pack Size_12 Three-part color-coded human skull modelUsed 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.