This allows the watch to find its beat and distribute the lubricants evenly. It is important to understand that a fresh watch off the shelf may need a break-in period of a month or so. The standard acceptable accuracy of mechanical wristwatches is as follows: This is generally not a problem unless the watch is constantly in extreme weather environments and is corrected by a very simple regulation. In modern watches most materials and designs are able to compensate for the changes and maintain a consistent rate. Temperature changes expand and contract many of the parts, changing the dimension and shapes - especially the balance wheel and hairspring. Temperature: The environment may have an impact on how accurate the watch operates.Watches are typically adjusted to between 2 - 8 positions:Ī watch adjust to 2 positions has been adjusted to the first 2 positions, a watch that has been adjusted to 4 positions has generally been adjusted to the above 4 positions and so on. If you remove the watch at night you may want to find the optimum position that will compensate for drift during wear. An adjusted watch should perform overall within the specification when worn throughout the day. The balance wheel has been adjusted to compensate for losses and gains in different positions. Position: Due to gravity a watch will gain or loose more time if laid to rest in a single position.To put things in perspective, if a watch is only 99.9% accurate it would be off by 1 minute and 27 seconds per day, which is unacceptable in the luxury watch world.Īccuracy is dependant on a few variables, such as: In the world of mechanics, anything assembled of small parts which are capable of maintaining 99% accuracy would be considered a top-tiered piece of machinery. What I'd really like to see is a good liquid piezoelectric material.Accuracy of Mechanical Wristwatches - What to Expect I suspect it'll be some kind of semi logarithmic function? Also, as more plastic deformation occurs, it will also begin to produce less of a charge differential. While I am not certain, I expect that over time piezoelectric materials will pass the elastic deformation stage (where upon it can return to it's original dimensions), and go into the plastic deformation stage (where upon it will retain some of it's deformed state). For example, if you take a copper rod, and continue to bend it and straighten it, it compresses the structure until you cannot bend it anymore. Different materials have different fatigue life, meaning they eventually break down or become too stiff to bend. However, there is a degree of material fatigue experienced during compression and expansion. That they've said, piezoelectric material do not "run out" of charge, as it simply serves as a medium for electrons to move through. We make our world significant by the courage of our questions and by the depth of our answers. For more open-ended questions, try /r/AskScienceDiscussion | Sign up to be a panelist!.Looking for flair? Sign up to be a panelist!.Neuroscience, Neurology, Neurochemistry, Cognitive NeuroscienceĪsk Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, PsychologyĪsk Anything Wednesday - Economics, Political Science, Linguistics, AnthropologyĪsk Anything Wednesday - Physics, Astronomy, Earth and Planetary ScienceĪsk Anything Wednesday - Engineering, Mathematics, Computer science Medicine, Oncology, Dentistry, Physiology, Epidemiology, Infectious Disease, Pharmacy, Human Body Psychology, Cognitive Psychology, Developmental Psychology, Abnormal, Social Psychology Social Science, Political Science, Economics, Archaeology, Anthropology, Linguisticsīiology, Evolution, Morphology, Ecology, Synthetic Biology, Microbiology, Cellular Biology, Molecular Biology, Paleontology Mechanical Engineering, Electrical Engineering, Structural Engineering, Computer Engineering, Aerospace EngineeringĬhemistry, Organic Chemistry, Polymers, Biochemistry Mathematics, Statistics, Number Theory, Calculus, AlgebraĪstronomy, Astrophysics, Cosmology, Planetary FormationĬomputing, Artificial Intelligence, Machine Learning, ComputabilityĮarth Science, Atmospheric Science, Oceanography, Geology Theoretical Physics, Experimental Physics, High-energy Physics, Solid-State Physics, Fluid Dynamics, Relativity, Quantum Physics, Plasma Physics /r/AskScienceDiscussion: For open-ended and hypothetical questions.FAQ: In-depth answers to many popular questions.Weekly Features: Archives of AskAnything Wednesday, FAQ Fridays, and more!.Be civil: Remember the human and follow Reddiquette.Report comments that do not meet our guidelines, including medical advice.Downvote anecdotes, speculation, and jokes.Upvote on-topic answers supported by reputable sources and scientific research.Answer questions with accurate, in-depth explanations, including peer-reviewed sources where possible.Please read our guidelines and FAQ before posting
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