[time-nuts] Leap Second Pending
rexa at sonic.net
Tue Jul 29 22:11:50 EDT 2008
Oh. I see! It was already a joke that I didn't get.
Chuck Harris wrote:
> According to Donald DeCarle's Watch and Clock Encyclopedia:
> Clepsydra- Water Clock. There are various types of water
> clocks, from the plain vessel with an orifice at its base through
> which water percolates and, by the lowering of the surface
> of the water the passage of time is denoted, to the water clock
> with a mechanical device to cause a hand to rotate. The mechanical
> clepsydra shown overleaf is simple in operation. The cylindrical
> vessel is slowly filled with water and a float with a stem and rack
> engages the wheel to which the hour hand is attached. As the vessel
> fills so the float rises and the hour hand is made to rotate. When
> the vessel is full it is emtied (sic) and the process starts over
> again. While this type of clock is spectacular and one would like
> to think it is of ancient origin, it has to be recorded that no
> ancient example has been handed down to us. On the other hand,
> Egyptian water clocks, as illustrated, have been found and date from
> about 1400B.C. Primitive water clocks of Saxon times have been
> found in the British Isles. They are of the "sinking bowl" type,
> where a bronze bowl with a hole in the bottom was placed upon the
> surface of the water, water percolated through the hole and
> eventually it sank which denoted a period of time. It is
> interesting to note that this system is still used in Algeria for
> timing periods of the supply of water for irrigation purposes.
> -Chuck Harris
> Rex wrote:
>> Mark Sims wrote:
>>> And my clepsydra is now indicating "Leak Second Pending"...
>> Did you make a typo... or is clepsydra a real word?
>> :-) (just joking)
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