Difference between revisions of "File:PLM5 twinning in gypsum particle PPL 200x.jpg"
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Photomicrograph of a sample of gypsum mixed with wheat starch grains stained with an organic red dye. Note the twinning observed in the central gypsum particle. Gypsum was confirmed with FTIR-ATR analysis (Colonial Williamsburg Foundation). Transmitted XPL, 200X. 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. | Photomicrograph of a sample of gypsum mixed with wheat starch grains stained with an organic red dye. Note the twinning observed in the central gypsum particle. Gypsum was confirmed with FTIR-ATR analysis (Colonial Williamsburg Foundation). Transmitted XPL, 200X. 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. | ||
| − | This sample was collected from an object in the Colonial Williamsburg Collection: Oval Box with Tooth Cleaning Powder, French, 1750-1830 | + | This sample was collected from an object in the Colonial Williamsburg Collection: CWF1950-593, Oval Box with Tooth Cleaning Powder, French, 1750-1830 |
Photo credit: Kirsten Moffitt, Colonial Williamsburg Foundation | Photo credit: Kirsten Moffitt, Colonial Williamsburg Foundation | ||
Latest revision as of 13:09, 27 September 2017
Photomicrograph of a sample of gypsum mixed with wheat starch grains stained with an organic red dye. Note the twinning observed in the central gypsum particle. Gypsum was confirmed with FTIR-ATR analysis (Colonial Williamsburg Foundation). Transmitted XPL, 200X. 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.
This sample was collected from an object in the Colonial Williamsburg Collection: CWF1950-593, Oval Box with Tooth Cleaning Powder, French, 1750-1830
Photo credit: Kirsten Moffitt, Colonial Williamsburg Foundation
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