PLM2 starch particle with lake XPL 400x.jpg
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Photomicrograph of wheat starch grain used as a red lake base, XPL at 400X. Note low birefringence with first-order grays and extinction cross. Examined with a Nikon NiU upright polarizing light microscope, image captured with DSRi1 Pixel-shifting camera and Nikon Elements Basic Research software. Colonial Williamsburg Foundation, Materials Analysis Laboratory.
Sample from object CWF1950-593, Tooth cleaning powder in oval paper box, French, c.1750-1830
Photo credit: Kirsten Moffitt, Colonial Williamsburg Foundation
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:50, 27 September 2017 | | 875 × 700 (388 KB) | KMoffitt (talk | contribs) | File uploaded with MsUpload |
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