Lume Workshop / Interactive model
Jumping seconds
Compare the continuous internal rhythm with a hand that advances once per second. Slow down, step through and explore the relationship between the star and flirt.
Six steps inside. One outside.
Play, slow down, or advance one half-oscillation at a time. Both hands display the same time with different rhythms.
- Model time
- 0.000 s
- Half-oscillations
- 0
- Jumps
- 0
An original functional illustration, not a scale reconstruction of a calibre. The separate star-and-flirt view follows Lange’s description; the release motion is extended for visibility. The remontoir, complete gearing and physical arrangement of components are not represented.
An original educational illustration, not a complete simulation of a particular calibre.
Why does a mechanical seconds hand wait for a full second?
What to observe
Follow the star and release lever. Intermittent hand motion is a separate task from regulating the movement.
Model limitations
This explains jumping seconds; it does not replace technical documentation for individual calibres.
Understand how it works
The mechanical watch that looks like quartz ↗
Find the detailed explanation, technical background and sources in the accompanying article.
More models in the Workshop ↗Share preview image: Lume: original editorial AI illustration. Not a product photograph or construction drawing.