Paul
Collingswood, NJ

 
Dear Paul:

The art of photographing very small objects is commonly known as photomicrography. Do a Yahoo! search on that term and you'll be directed to a category (under Optical Engineering: Microscopy) that contains two branches, one for electron microscopes and another for microscopes that use visual light.

Both categories contain sites that explore the aesthetic beauty of microscopy and the scientific research behind it. One of the best resources, Molecular Expressions, offers a broad variety of photographic subjects, from beer to silicon chips to cell mitosis.