One of the more interesting announcements at Basel this year came from the engineering team at TAG Heuer. The company's new Pendulum Concept replaces the traditional hairspring with a "virtual spring" that works by driving a pendulum that moves between magnetic fields.
The fields are controlled in 3D through complex geometric calculations and provide the linear restoring torque necessary for the alternative movements of the balance wheel. The oscillating period of the TAG Heuer Pendulum Concept is resistant to changes from perturbing forces, which makes it exceptionally accurate. The watch, which gets its name from a 1657 pendulum clock, actually beats at 43,200/hour (6 Hertz).
It may sound like mechanical magic, but the real witchcraft here is the elegance and simplicity of the watch itself.
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