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geometry [2021/09/06 12:37] rapidplatypus [Everywhere is North] |
geometry [2021/09/06 12:42] (current) rapidplatypus [Revolutions] |
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==== Revolutions ==== | ==== Revolutions ==== |
The hour hand makes 2 revolutions per day, while the minute hand makes 24 revolutions - so it passes the hour hand 22 times. To put it another way: during each hour the hands pass each other once, except for 11:00-12:00 and 23:00-24:00 when the minute hand "catches up" with the hour hand at the end of the hour. [([[https://nrich.maths.org/590/solution|Maths]])] | A clock's hour hand makes two revolutions per day, while the minute hand makes 24 revolutions — so it passes the hour hand 22 times. To put it another way, during each hour the hands pass each other once, except for 11:00-12:00 and 23:00-24:00 hours, when the minute hand "catches up" with the hour hand at the end of the hour. [([[https://nrich.maths.org/590/solution|Maths]])] |
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==== Ellipsoid ==== | ==== Ellipsoid ==== |