19.3 MB (1.3 MB compressed)
2944 x 2290 pixels
24.9 x 19.3 cm ⏐ 9.8 x 7.6 in (300dpi)
VOLKER STEGER / SCIENCE PHOTO LIBRARY VOLKER STEGER / SCIENCE PHOTO LIBRARY
Sandpaper. Coloured scanning electron micrograph (SEM) of the surface of advanced sandpaper showing the regular pyramidal arrangement on its surface. Sandpaper is designed to smooth rough surfaces by taking off their upper layers, and this type consists of tiny raised pyramids which are highly durable and abrasive. Magnification: x15 at 6x7cm size.
Model release not required. Property release not required.