26.4 MB (26.0 MB compressed)
3543 x 2607 pixels
30.0 x 22.1 cm ⏐ 11.8 x 8.7 in (300dpi)
DR. TONY BRAIN / SCIENCE PHOTO LIBRARY DR. TONY BRAIN / SCIENCE PHOTO LIBRARY
Scanning electron micrograph (SEM) of the surface of a long-playing record (L.P.), showing a spherical diamond stylus (suspended below its cantilever arm) sitting in a groove. The L.P. is made by pressing the recording information onto a softened (heated) PVC disc. The stylus sits nicely in the V-shaped groove, and lateral vibrations are picked up by the stylus and transduced by a moving-coil or moving-magnet cartridge into an electrical signal, which passes through an amplifier to be heard on loudspeakers. Magnification: X 13 at 35mm size, X 90 at 8x10- inch size.
Model release not required. Property release not required.