1. Why does a day have only hventy-four hours! in 4 to 5 lines

1.	1. Why does a day have only hventy-four hours! in 4 to 5 lines
Answer» tion:Our system of telling time is based on the premise that EVERY day is exactly 24 hours long — quite precisely, with no exceptions. This concept is fully ingrained into our culture, a core principle of our modern technological society. At the same time, we are taught in school that a day corresponds to one complete rotation of the Earth on its axis. Unfortunately, these two concepts don’t quite match up — and the mismatch is more than just a few milliseconds. In fact, the mismatch amounts to several minutes every day. Furthermore, because our TRADITIONAL concept of a “day” is actually defined by the CYCLE of sunlight and darkness — and not by one rotation of the Earth — the length of a real day is not consistent, but varies somewhat during the year. We only pretend that all days are the same length — by averaging the length of all the days in the year, and then defining this average as a “STANDARD day” of exactly 24 hours.

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