50.8 MB (2.2 MB compressed)
4851 x 3661 pixels
41.1 x 31.0 cm ⏐ 16.2 x 12.2 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
DVD drive motor. Coloured scanning electron micrograph (SEM) of the electric motor from a computer DVD disk drive. The turntable has been removed to show the interior. The central hole contains the spindle on which the turntable turns. Around the hole are 6 small electromagnets, composed of copper wire (yellow) wound around metal bars. These electromagnets are fed with current, which generates a magnetic field. This interacts with permanent magnets on the turntable (not seen), causing it to spin at a constant speed. Magnification: x10 when printed 10 centimetres wide.
Model release not required. Property release not required.