Gordon Uber <[EMAIL PROTECTED]> writes:
> Let's face it: The Babylonians got it right when they developed the
base-60
> system. It was applied to the sixth of a circle (one sixtieth of this
> being a degree) and the hour, of which we still use the first and second
> minutes. Third minutes
Gordon Uber <[EMAIL PROTECTED]> writes:
> Let's face it: The Babylonians got it right when they developed the base-60
> system. It was applied to the sixth of a circle (one sixtieth of this
> being a degree) and the hour, of which we still use the first and second
> minutes. Third minutes (
And you are quite right, Gordon! I jumped to minutes, from seconds...
Something like that usually happens when I nitpick at someone else's typo!
How about 5 and 24 uRad for limiting sizes?
Dave
On Tue, 15 Feb 2000, Gordon Uber wrote:
> Dave,
>
> You are quite correct: 17.45 mrad = 1 deg, no
You are quite correct: 17.45 mrad = 1 deg, not 1 arc minute.
However 4.848 microrad = 1 arc second, or approximately 5 microrad.
You may be thinking of 1 arc mjnute = 0.2909 mrad
Gordon
At 02:13 PM 2/15/00 -0800, Dave Bell wrote:
Whups! You meant a *degree* is ~17 mRadian, didn't you? An
On Tue, 15 Feb 2000, Gordon Uber wrote:
> Third minutes (sixtieths of second minutes) are not in common
> use, although I would note that the third minute of an hour is the period
> of U.S. power main standard 60 Hz alternating current. Coincidence?
Hmm... Surprised I never noticed that! Perh
Let's face it: The Babylonians got it right when they developed the base-60
system. It was applied to the sixth of a circle (one sixtieth of this
being a degree) and the hour, of which we still use the first and second
minutes. Third minutes (sixtieths of second minutes) are not in common
Tony Moss <[EMAIL PROTECTED]> wrote:
> The US of course still use Queen Anne's gallon which the Imperial
> system replaced with a larger unit later on. We often forget this
> when comparing fuel prices.
> Tony Moss
I guess one could say that Queen Anne's gallon has outlived the
imperial gallon
Fellow Shadow Watchers,
As a teacher within the UK educational system I
went entirely metric from the late 60's. If school examinations were to
be exclusively metric there was no choice. Everything in Imperial
Measure was ruthlessly discarded; not a rod, pole, perch, pec
