1983 Photomicrography Competition

Urea, ferric chloride, citric acid with phenol red, from 70% ethanol

Rahn Kollander

Affiliation
University of Minnesota
St. Paul, Minnesota, USA
Technique
Brightfield
Magnification
23x

Sulfur, slow melt

Per H. Kjeldsen

Affiliation
University of Michigan
School of Denistry
Ann Arbor, Michigan, USA
Technique
Polarized Light
Magnification
60x

Coating process defect caused by a yellow image dye aggregate in a Polaroid color negative

Edmund Montello

Affiliation
Polaroid Corp.
Waltham, Massachusetts, USA
Technique
Kohler Illumination
Magnification
26x