WATCH SEASON 7 HIGHLIGHTS .
(Dur: 4.31)
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Some papers can be authenticated with microscopy, in this case photograph paper is shown at 100X magnification. Visible fibers prove the photo was made before 1900; later photos had coated surfaces.
Simple Magnification
Some papers can be authenticated with microscopy, in this case photograph paper is shown at 100X magnification. Visible fibers prove the photo was made before 1900; later photos had coated surfaces.