 Human face-like Pyroxene crystal in a Basalt from Etna (Italy). Plane polarized light image, magnification 10x (Field of view = 2mm) |  Moon topography, partial
[crater at coordinates 27.1°N 9.1°W] |  Fibrous crystals of purified caffeine. Dark-field microscopy image, about 7 mm × 11 mm |  Human hair 5000X |  Women's nylon stockings 500x |  Grooves on vinyl record |  toothbrush |  SEM images of the toothpastes' surfaces (a) Commercial toothpaste (CT-A ), (b) Commercial toothpaste (CT-B), (c) Toothpaste without HAp and (d) Toothpaste with Hap. |  Tungsten filament |
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