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Math Forum » Discussions » Inactive » Historia-Matematica

Topic: [HM] Poincare Conference
Replies: 9   Last Post: May 12, 2004 8:13 PM

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Bob Berghout

Posts: 1
Registered: 12/3/04
Re: [HM] Question: Weekdays
Posted: May 10, 2004 11:37 PM
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My understanding (which may need correction!) is that the concept
of a day of 24 equal length hours is fairly recent (a thousand
or so years), except among astronomers. Before that, non astronomers
divided daylight into 12 equal 'hours' and night also into 12 hours,
with day and night hours only being equal at the equinoxes.

Does the naming of the weekdays precede or postdate the concept
of a widely accepted 24 hour 'day' which contains both daytime
and nighttime?

Regards to all

Bob

>



Bob Berghout
School of Mathematical & Physical Sciences
University of Newcastle
NSW2308
Australia

ph +61 2 4921 5190






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