One of the mysteries of the English language finally explained.
A clock measuring sidereal time in terms of 24 equal divisions of a sidereal day.
- ‘After a year, the sidereal clock would be exactly a day faster: there are 366 sidereal days in a year.’
- ‘Like military time clocks, sidereal clocks run from 0 hours to 24 hours but they run a tiny bit faster than normal clocks, completing 24 hours in 23h 56m.’
- ‘This firm was in business in London from about 1820 to 1840, and nearly all of the sidereal clocks which came to America during this period were made by them.’
- ‘Because the side real day is 4 solar minutes shorter than the solar day, sidereal clocks tick at a slightly different rate than solar clocks.’
- ‘In fact a sidereal clock and an ordinary clock tick at different rates because they are based upon different astronomical objects.’
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