Sneezes, rain clouds, and ink jet printers: They all produce or contain liquid droplets so tiny it would take several billion of them to fill a liter bottle. Measuring the volume, motion and contents ...

Dutch scientist Antonie van Leeuwenhoek made extraordinary observations of blood cells, sperm cells and bacteria with his microscopes. But it turns out the lens technology he used was quite ordinary.

Microscopes are of three basic types: optical, electron (or ion), and scanning probe. The modern optical or light microscope was developed in the mid-19th century. Optical microscopes use transparent ...

Optical microscopy is a technique employed to closely view a sample through the magnification of a lens with visible light. This is the traditional form of microscopy, which was first invented before ...

Current techniques for imaging cells are limited to investigating a handful of different molecule types within a cell at one time. But being able to better measure molecular signals, and how cells ...

Dust can be used as a metric for residential and building exposure assessment and source characterization (Lioy et al., 2002a). By using forensic techniques that have been developed by criminologists ...