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The molecular clock (based on the molecular clock hypothesis (MCH)) is a technique in It is used to estimate the time of occurrence of events called speciation or radiation. — “Molecular clock - Wikipedia, the free encyclopedia”, en.wikipedia.org
Zebedee B. Armstrong (October 11, 1911 – 1993), aka Z.B. Armstrong, was an outsider artist best known for his doomsday calendars. Many of the calendars are made of wood and have clocklike designs with hands used to calculate dates. — “Zebedee Armstrong - Wikipedia, the free encyclopedia”, en.wikipedia.org
As the price of gold changed, an electrical signal sent from the trading floor would cause a hand on the device—a clocklike dial rimmed with numerals—to move until it pointed to the latest trading price. Laws initially placed a gold indicator. — “Samuel Laws - Wikipedia, the free encyclopedia”, en.wikipedia.org