False-colour scanning electron micrograph (SEM) of two strands of merino sheep wool, showing the typical overlapping scales of animal hair. Magnification: x2000 at 4x4-inch size, x700 at 35mm size. This colouring technique was developed in 1985 by Dr G.D. Danilatos of the CSIRO Division of Textile Physics, Australia; he calls it environmental SEM or ESEM.).
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