The circadian clock in cyanobacteria represents one of the most elegant and thoroughly studied biological timekeeping systems. This oscillator is principally driven by the concerted actions of Kai ...
More than 130 years after its installation atop the Cambridge City Hall, a mechanical tower clock — wound by hand each week — continues to chime. Crimson photographers followed David W. Graf, the ...
This guide will walk you through key identification tips, from recognizing clock styles and mechanisms to understanding materials and maker marks.
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