Record Needle, SEM

Needle playing a record. Colored scanning electron micrograph (SEM) of the needle (stylus) of a record player in a groove on a record. A record is used to store sound. It is produced by a machine with a head which vibrates in time to the sound being recorded. This cuts a groove in the record which varies according to the vibrations. A needle can then reproduce these vibrations as it runs along the groove and these, when amplified, produce the original sound. This is a stereo record. The needle in contact with the record is a LP needle, or a long play needle designed for stero use. This record is designed for 45 RPM. Magnification is 100x when printed at 10 cm wide.

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Filename: K13SEM-Needle-45stereo3-A.jpg
Copyright: Ted Kinsman / Science Source Inc.
Image Size: 2645x1895 / 3.5MB; colored false-color technological gramophone groove grooves horizontal landscape lp music audio needle playing record scanning electron micrograph sem sound acoustics stylus technology vinyl stereo 45 rpm
Contained in galleries: Scanning Electron Microscopy

Needle playing a record. Colored scanning electron micrograph (SEM) of the needle (stylus) of a record player in a groove on a record. A record is used to store sound. It is produced by a machine with a head which vibrates in time to the sound being recorded. This cuts a groove in the record which varies according to the vibrations. A needle can then reproduce these vibrations as it runs along the groove and these, when amplified, produce the original sound. This is a stereo record. The needle in contact with the record is a LP needle, or a long play needle designed for stero use. This record is designed for 45 RPM. Magnification is 100x when printed at 10 cm wide.