51.1 MB (3.0 MB compressed)
3531 x 5059 pixels
30.0 x 42.9 cm ⏐ 11.8 x 16.9 in (300dpi)
DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY DR JEREMY BURGESS / SCIENCE PHOTO LIBRARY
Scanning electron micrograph (SEM) of the surface of soft tissue paper, typically used as toilet paper. It is an example of hygienic paper made from pure bleached chemical woodpulp without further additions - no sizing (sealing on paper surface) or alum. It is produced on large, fast- running paper machines. Although vegetable fibres & rags are still used, modern paper is predominantly made from wood, in particular spruce, hemlock, poplar, pine, & fir. Magnification: x18 at 35mm size, x125 at 8x10-inch size. Reference: MICROCOSMOS, figure 9.12, page 180.
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