Foldscope calibrations and measurements – or pixels and spider silk

Objective:          To photograph the LED (light emitting diode) pixels on a computer screens with my samples of Foldscopes and to calibrate the lenses. In addition, the Foldscopes will be use to examine some spider web silk fibers. Methods and Materials:        Two Foldscopes from the Foldscope kits were assembled using the L1 140X lens and the…