19 Raw sienna 500X pol.jpg
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Raw sienna
Polarized photomicrograph of raw sienna at 500X. From the McCrone Paint Pigment Reference Set. Due to small particle size, it is difficult to differentiate particles of raw sienna from that of other pigments with an optical microscope. Sample provided by the MFA Scientific Research Lab.
Photo credit: Keith Lawrence, Museum of Fine Arts, Boston
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current | 16:49, 20 April 2013 | 1,200 × 900 (23 KB) | Maintenance script (talk) | Importing image file |
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