Watch Related Terms & Terminology
All
| Term | Definition |
|---|---|
| Gravity |
The attraction exerted by Earth on all bodies. Its value is defined by the acceleration it causes in a free falling body. |
| Horology |
The science and study of time measurement, the art of manufacturing or repairing timepieces. |
| Impulse |
Energy transferred to the balance or pendulum to maintain it in oscillation. |
| Inhibition |
Electronic procedure for fine tuning a quartz watch without modifying the specific frequency of the quartz, periodically (every 60 seconds) adapts the moment of electrical impulse to the motor, correcting the display. |
| Invar |
A metal alloy comprised of about 36% nickel, 64% iron, having a very low coefficient of expansion. Comes from the word "invariable" |
| Isochronism |
Condition when time taken for 1 vibration remains the same, regardless of amplitude. |
| Jewel |
A Synthetic material used to make a modern watch movement's bearings - These synthetic Rubies are almost as hard as diamonds. The "Jewels" reduce friction and maintain the properties of the oil longer. |
| Kinetic Energy |
Energy possessed by a body in motion. |
| Knocking |
When the amplitude of a balance wheel exceeds 315 degrees, the roller jewel may strike the horn of the pallet fork at the end of the supplementary arc. |
| Lift Angle |
The angular distance which the roller jewel makes contact with the pallet fork. |