24.5 MB (951.3 KB compressed)
2589 x 3307 pixels
21.8 x 27.9 cm ⏐ 8.6 x 11.0 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Insulation. Coloured scanning electron micrograph of a fibre of a dacron polyester material used in sleeping bags. The core of each fibre has four cavities running the whole length of the fibre, increasing the thermal insulation properties. Magnification: x1350 at 6x7cm size.
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