Teeth Serve as “Archive of Life,” New Research Finds

Single Rotor Moiré Clock

https://www.youtube.com/watch?v=ubjwEHqmXWg

Pitch Drop experiment

wiki

He allowed the pitch to cool and settle for three years, and then in 1930 he cut the funnel's stem. Since then, the pitch has slowly dripped out of the funnel - so slowly that it took eight years for the first drop to fall, and more than 40 years for another five to follow.

Object of Intrigue: Ancient Persian Water Clocks

https://fineartamerica.com/featured/1-an-ancient-clepsydra-or-water-clock-ken-welsh.html

Binary clock

showed each decimal digit of sexagesimal time as a binary value, but presently binary clocks also exist which display hours, minutes, and seconds as binary numbers. Most binary clocks are digital, although analog varieties exist. True binary clocks also exist, which indicate the time by successively halving the day, instead of using hours, minutes, or seconds. Similar clocks, based on Gray coded binary, also exist.