Yes, they didn't have digital displays and printouts that say "OK", but the device built by the Scottish clockmaker Alexander Bain in 1843, which compri sed a pen attached to a pendulum kept in motion by electromagnetic impulses, is remarkably similar in principle to the modern machine.
But no one had explained precisely how the disk loses its energy and why it suddenly poops out, instead of lingering in motion like a pendulum gradually coming to rest.
Cristiano Banti's Salviati also held it could be experimentally demonstrated by the comparison of pendulum motions in air with bobs of lead and of cork which had different weight but which were otherwise similar.
A drawing mechanism will start marking up the surface of the globe at the beginning of the show using a pen set in motion by two pendulums, which move whenever people interact with them.
Similarly, Saxl and Allen in 1970 observed sudden change in motion of a torsion pendulum, and this phenomenon is called the Saxl effect.
The Froude number, a dimensionless parameter originally designed to normalize the same (pendulum-like) motion in differently sized subjects, proved to be useful also in the comparison, within the same subject, of walking in heterogravity.
Original in design, this disposable bioreactor comprises a rectangular parallelepiped plastic bag stirred by a paddle revolving in elliptic pendulum motion.
Indeed, Prokofiev modelled his musical material partly on Moussorgsky's: as in the Coronation Scene, a chord progression sways across the interval of the tritone, in unrelenting pendulum motion.
Hydrophobic interactions with helix 6 then pull helix 4 in a pendulum motion, with a maximal displacement at its N-terminus: the DNA interface.
Riders will sit in 40 outward facing coaster-style seats as a counterclockwise-spinning circular gondola swings in a pendulum motion.
