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25.9 MB (3.7 MB compressed)
2590 x 3500 pixels
21.8 x 29.7 cm ⏐ 8.6 x 11.7 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Polypropylene filaments. Coloured scanning electron micrograph (SEM) of filaments of the plastic polypropylene, formed by the polymerization of propylene. This material is similar to high-density polythene, but is stronger, lighter and more rigid. It is also a thermoplastic, meaning that it can be repeatedly softened by heating and hardened by cooling. Polypropylene is used to make solid products and fibrous materials. Magnification: x3 at 6x7cm size.
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