Zefram wrote:
The historical trend is towards using uniform time units.  It seems
curious now that when the atomic clock was invented astronomers opposed
calling it a "time" standard.

Well, it seems curious to everybody except Rob Seaman :-)

It is much like the ancient Egyptians (IIRC) making the transition from
sundials to water clocks.  They had always marked out hours on sundials
subtending equal angles, so the actual temporal length of the hours
varied over the course of the day.  When the water clock gave them
an independent time reference, they were horrified that its uniform
hours didn't match sundial hours.  Much technical ingenuity went into
mechanical modifications to water clocks to make them accurately emulate
what went before.

Nice analogy.


Reply via email to