Impurities are important

Impurities are important

Despite being merely microns thick, these impurity crystals jut like skyscrapers from the surface of NF 616 cast stainless steel, a specialized engineering material. All engineering materials contain small amounts of impurities, which play an important role in the mechanical… More »

A Nose for Nectar

A Nose for Nectar
This CSI is a scanning electron micrograph of the snout of a butterfly. Conveniently coiled when not in use, the long proboscises of butterflies are used to drink and obtain nectar and other nutrients from flowers. This pretty picture was… More »