Metronome n. An instrument consisting of a short pendulum with a sliding weight. It is set in motion by clockwork, and serves to measure time in music.
... is blankness, darkness, so the mind can only attend to a certain amount of complexity—add to the complexity and attention ceases, but, a certain degree of complexity is necessary to produce any conscious attention at all. In experiments with a Metronome and the ticking of a watch, it is found the attention at certain intervals gets weaker—from 2 to 3 seconds. The impression produced by the ticking of the watch is less distinct, it seems to disappear and then is heard again. ... — Cobwebs of Thought • Arachne Read full book for free!
... inch broad. It may be passed before the rotating disc by hand. For the sake of more careful study, however, the rod should be moved at a constant rate by some mechanical device, such as the pendulum and works of a Maelzel metronome removed from their case. The pendulum is fixed just in front of the color-disc. A further commendable simplification of the conditions consists in arranging the pendulum and disc to move concentrically, and attaching to the pendulum an isosceles-triangular shield, so cut that it forms ... — Harvard Psychological Studies, Volume 1 • Various Read full book for free!