Clocks and watches - Topics

Why does a pendulum clock run slow in a hot summer and fast in a cold room? Why does a watch lose a chunk of its value the moment you wear it? Why do watch adverts sell heritage instead of accuracy? Is a vintage watch worth buying when the service history is missing? Why does an automatic watch stop overnight if you leave it on the bedside table? Why does a watch start running fast after sitting near a laptop speaker? Why do quartz watches keep better time yet feel cheaper than mechanical ones? Why does water resistance often fail right after a battery change? How can you spot a fake watch without opening the case? What does a tourbillon actually correct and does it matter on a wrist? What does an in-house movement mean and why do collectors pay extra for one? How do independent watchmakers survive when one movement takes a year to finish? Is a watch marked 50 m water resistant actually safe to swim in? Why do quartz watches lose a few seconds a month no matter how fresh the battery is? How often does a mechanical watch really need servicing and what does it cost? Why do anglage and perlage matter on a movement nobody will ever see? Why does a stopped clock seem right twice a day more often than chance allows? Why does a smartwatch battery last two days while a solar G-Shock runs for ten years? What does chronometer certification actually guarantee beyond a good rate? Which watch complications are genuinely hard to build and which are decoration? How did cheap quartz watches change who could own accurate time? Do luxury watches hold value better than gold jewellery?