In Iowa, United States
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Cache is small. Tyvek log. Use a pen for writing [[and pushing]].
A Birefringent Puzzle
Find the coordinate for the cache.
Click on the picture.
Birefringence for Kids!
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- Paradichlorobenzine (as in urinal cake)Paradichlorobenzine between polarizing filters. Magnified highly with my microscope. Color saturation enhanced.
- Paradiclorobenzine formula
- Puzzle pieces with black background
Last Updated: on 6/15/2014 6:55:52 PM Pacific Daylight Time (1:55 AM GMT)
Coordinates are in the WGS84 datum