1978 Photomicrography Competition

Aspirin crystals

David H Minsker

Location
West Point, Pennsylvania, USA
Technique
Transmitted Polarized Light
Magnification
100x

Pyrogallic acid, crystallized in water

Rocky Midyett

Location
Covina, California, USA
Technique
Polarized Light
Magnification
100x

TNT Polymorph

Christine Skirius

Affiliation
McCrone Research Institute
Chicago, Illinois, USA
Technique
Crossed polars
Magnification
100x