Almost every unit of time you use is a measurement of something physical.
The day is the Earth turning once. The month is roughly the Moon going through its phases.…
The metric system is the most successful standardisation project in history. It is used by almost every country on Earth, it underpins science globally, and its units have been redefined…
Time feels like the most objective thing we measure, and the system we use to measure it is almost entirely a set of historical accidents. Here are twelve of them.…
Source: Wikipedia
Ancient Egypt gets filed in most people's heads as a single block of time. Pyramids, mummies, hieroglyphs, gold masks, Cleopatra. All of it feels like it belongs together, roughly…