Creating such a topographic map was essential because Edison's recording styluses cut grooves a few micrometers deeper or shallower depending on the timbre of the voice and the words spoken.
Pads that include liquid crystal diode displays, so you can see your signature under the stylus rather than on the computer screen, make signing easier, and it is best to get a pad that records stylus pressure.
Some blind people read Braille by running a single finger, like a record stylus, over the stipples representing the alphabet.
For owners of 33 rpm LPs and 45 singles, loud and deep bass was limited by the ability of the phonograph record stylus to track the groove.
With the advent of the compact cassette and the compact disc in the 1980s, the easy reproduction of deep and loud bass was no longer limited by the ability of a phonograph record stylus to track a groove, and producers could add more low frequency content to recordings.
All modern phonograph systems had certain components in common: a turntable that rotated the record; a stylus that tracked a groove in the record; a pickup that converted the mechanical movements of the stylus into electrical impulses; an amplifier that intensified these electrical impulses; and a loudspeaker that converted the amplified signals back into sound.
The first black box measured only five parameters (heading, altitude, airspeed, vertical acceleration, and time), which were recorded by a stylus that embossed the information directly onto a piece of metal foil that could be used only once.
Ordinarily an AFM images the bumps and hollows of a surface by recording the deflections of its stylus.
As the Presto records, its stylus cuts a groove in the disk.
Instead of passively recording forces, its stylus actively presses down, recording how hard the cell presses back.
