Pat:
I suggest that we simply define a quadrant as a right angle and define a
new unit called a quad >equal to a quadrant.
As in my previous post (just sent), I admit: Quadrant is a RIGHT angle. The
*QUAD* shall suffer the ease that we use for 90-degree quadrant - especially
for Naughtical astronomy. This caused me to THINK ahead and work for
*decimalisation of arcAngle (Degree) in relation to Decimalisation of
HOUR-angle*. My results have been posted time & again - I would not wish
that experts misjudge my line of thought.
It is the ease with which a man on STREET can grasp: Why change when I can
manage without it? Thus, I keep the *quadrant, clock face & Year Length
undisturbed & call my scheme: Decimalisation of Time of the Hour &
arcAngle*. In fact, the TWO refer to Metrication - since linked to one
another via the Metre New (m') of '1/10^5th of Degree'.
Regards,
Brij Bhushan Vij
(Sunday, Kali 5106-W40-00)/D-017(Tuesday, 2006 January 17H12:51(decimal) ET
Aa Nau Bhadra Kritvo Yantu Vishwatah -Rg Veda
Jan:31; Feb:29; Mar:31; Apr:30; May:31; Jun:30
Jul:30; Aug:31; Sep:30; Oct:31; Nov:30; Dec:30
(365th day of Year is World Day)
******As per Kali V-GRhymeCalendar******
2108 Henry Court, MAHWAH NJ 07430 (USA)
Telephone: +001(201)684-0191
From: Pat Naughtin <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: "U.S. Metric Association" <[email protected]>
Subject: [USMA:35708] A quadrant is the right angle!
Date: Tue, 17 Jan 2006 15:21:28 +1100
Dear Brij and All,
I wish to comment on a point you made in your posting:
'Re: [USMA:35676] Re: decimal time'.
I have little interest in decimal time, so I won't comment on that, and I
have changed the title to 'A quadrant is the right angle!'
On 16/01/06 7:06 AM, "Brij Bhushan Vij" <[EMAIL PROTECTED]> wrote:
> and 100-grad (or as I
> called Metric Degree) to arrive at Nautical Kilometre; <snip> and
90-degree
quadrant AND replace Nautical Mile of 1/60th of ONE degree with *Nautical
Kilometre of 1/100th of ONE Degree.
As you know from your studies of the history of the metric system, the very
first unit of the metric system was the quadrant and the second unit was
the
metre, which was based on the quadrant.
The quadrant was needed to define the original metre as 1/10 000 000 of the
distance on the Earth¹s surface subtended by one quadrant. Little thought
was given to the definition of the quadrant as it was assumed that everyone
knew about a right angle¹ and how to define it.
Once the metre was defined, the quadrant quietly faded into the background
of academic metrology and the quadrant has only used on a daily basis by
almost everyone in the world since then. One might almost say that the
quadrant (or right angle as it is also known) fits the description: For
all
people for all time¹.
Sadly, the academic metrologists seem to be unaware of the quadrant as a
practical everyday measuring unit and have tried form time to time to foist
such things as radians on practical builders, which makes all corners of
all
rooms a convenient¹ ¼/2 radians; clearly a measurement that can be left to
the junior apprentice!
I agree with you that we need to reconsider the practical measurement of
angles. The International System of Units does not currently have a unit of
plane angle that people can conveniently use. However, I don¹t agree that
resurrecting from history nautical miles¹, or the grads, grades, or gons
of
the past is the way to go.
I suggest that we simply define a quadrant as a right angle and define a
new
unit called a quad¹ equal to a quadrant.
Obviously one quadrant at the centre of the Earth would subtend a line at
the surface that was (practically) 10 000 kilometres long and an angle of 1
milliquad would describe a surface distance of 10 kilometres.
This suggestion would, naturally, make the nautical mile in all its forms,
such as air miles, redundant. Navigation in all forms would be much simpler
as it was intended by the creators of the metric system when they chose (in
1793) to use the quadrant as the primary unit of the (then) new metric
system.
Cheers,
Pat Naughtin LCAMS (USMA), Member NSAA*
PO Box 305, Belmont, 3216
Geelong, Australia
Phone 61 3 5241 2008
Pat Naughtin is the editor of the free online monthly newsletter,
'Metrication matters'.
You can subscribe by going to http://www.metricationmatters.com/newsletter
* Pat is the editor of the 'Numbers and measurement' chapter of the
Australian Government Publishing Service 'Style manual for writers,
editors and printers', he is a Lifetime Certified Advanced Metrication
Specialist (LCAMS) with the United States Metric Association, a member of
the National Speakers Association of Australia and the International
Federation for Professional Speakers. For more information go to:
http://metricationmatters.com
This email and its attachments are for the sole use of the addressee and
may
contain information that is confidential and/or legally privileged. This
email and its attachments are subject to copyright and should not be partly
or wholly reproduced without the consent of the copyright owner. Any
unauthorised use of disclosure of this email or its attachments is
prohibited. If you receive this email in error, please immediately delete
it
from your system and notify the sender by return email.
