Pediculus humanus capitis

Pediculus humanus capitis A human head louse captured with a foldscope: The headlouse was cooled before preparation and stayed alive because tape was a used as a spacer.

Oak wood

This sample is a cross section through wood from a type of oak (Quercus pubescens). The video first shows  “late wood”, which is formed towards the end of the tree’s yearly growth phase, then you can see the growth ring boundary, which is followed by an area with large holes. These large holes are pores…