1993 Photomicrography Competition
![Small World](/images/SW50-logo.png)
![](https://www.nikonsmallworld.com/images/photos/1993/_photo800/1993_06.jpg)
6th Place
Sprayed powdered aluminum metallographically polished and etched
Robert A. Edahl, Jr.
- Affiliation
- NASA - Langley Research Center
Hampton, USA
- Technique
- Differential Interference Contrast
- Magnifaction
- 18