n
An obsolete device for measuring a bullet's momentum, from which it is possible to calculate the velocity and kinetic energy.
n
The dangling mass of a pendulum or plumb line.
n
The pinion on the minute hand arbor of a watch or clock, which drives the hand but permits it to be moved in setting.
n
A mechanism powered by a coiled spring and regulated by some form of escapement; the power is transmitted through toothed gearwheels and used to drive a mechanical clock, toy, or other device.
n
A pendulum constructed so that its rod is not altered in length by changes of temperature.
n
(physics) Any swinging rigid body free to rotate about a fixed horizontal axis, distinguished from the ideal simple pendulum.
n
A device for calibrating a pendulum consisting of a dilatable plate that produces an artificial tilt of a clinometer.
n
(obsolete) A complete course or vibration, as of a pendulum.
n
A pendulum that has a second one attached to its free end
n
Synonym of Foucault's pendulum
n
A pendulum on a long wire, free to move in any direction; the plane of its motion appears to turn (clockwise in the Northern Hemisphere) as the world turns beneath it.
n
(horology) A device for maintaining a force to drive the train while the timepiece is being wound up.
n
Synonym of gravity assist
n
A spring, made of a coil of fine wire, that is used to regulate the movement of a balance wheel in a watch.
n
(science fiction, video games, rare) An extraordinarily intense beam of any size (of energy or matter); a superbeam.
n
A pendulum for carrying from station to station to be oscillated at each, so as to fix the relative acceleration of gravity.
n
(horology) The principal spring of a clockwork mechanism, which drives it by uncoiling.
n
A device that demonstrates conservation of momentum and energy via a series of swinging spheres. When a sphere at one end is lifted and released, the resulting force travels through the line and pushes the opposite sphere upward, repeating the process as it swings back down.
n
An inverted pendulum consisting of a short vertical flat spring which supports a rod having a bob at the top; used for detecting and measuring slight horizontal vibrations of a body to which it is attached.
adj
Characteristic of the motion of a pendulum
n
(clocks, mechanics) A body suspended from a fixed support so that it swings freely back and forth under the influence of gravity, commonly used to regulate various devices such as clocks.
n
A kind of flat steel wire for clock pendulums.
n
(obsolete) Something hanging straight down; a plumb line.
n
Any vertical reference line.
n
Something, such as a joint, that moves by rotating.
n
(physics) Any pendulum having a period equal to that of a hypothetical pendulum whose length is equal to the Earth's radius (84.4 minutes); its arm will remain locally vertical when the pivot is moved and is therefore the basis of navigational instruments
n
A line between an observer or a piece of optical equipment and an object of interest; line of sight.
n
(physics) A hypothetical pendulum consisting of a weight suspended by a weightless string.
n
(cycling, Australia) Synonym of tubulars
n
A churn box hung so as to be worked by oscillation.
n
The wheel that drives a clock's pendulum, corresponding to the balance wheel in a watch.
n
Any part of a machine with a spiral movement.
n
(horology) The spindle of a watch balance, especially one with pallets, as in the old vertical escapement.
n
(physics) A field associated with the warping of spacetime
n
A pendulum consisting of a mass suspended by a long helical spring and free to turn on its vertical axis, twisting the spring; used as a demonstration in physics education.
n
A portable radio which can operate where no external power source is available, and is activated by a winding mechanism.
n
(medicine, often attributive) A technique for intramuscular injection that uses a zigzag path.
n
The plates and bridges of an unfinished watch
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