>From AUSLIG's newsletter - regards - David
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As the Cocky flies
Calculate the direct distance between two locations in Australia using
AUSLIG's new interactive tool.
More details @: http://www.auslig.gov.au/new.htm#cocky or go direct to
the calculator at http://www.auslig.gov.au/mapping/names/distance.htm
As the Cocky flies
Now you can calculate the direct distance between two
locations in Australia
using AUSLIG's new interactive tool, As the Cocky
Flies.
It uses a method known as "the great circle distance
between points", which is
useful for a wide range of projects, including: radio
propagation; gliding,
ballooning and sailing; plant and animal studies (for
example, how far a mob of
kangaroos travel in search of feed); sales and
marketing statistics; school
projects; and scientific studies.
Why not try it now? Click on the Cocky
at left to calculate a
distance.
The calculation is based on spherical
trigonometry, and
assumes that one minute of arc is one
nautical mile, and one
nautical mile is 1.852 kilometres.
Great circle distance varies from actual road
distance. For instance, if you
were to travel along the Birdsville Track between
Marree and Birdsville, you
would cover 517 km. The great circle distance, however
(as the Cocky flies) is
only 435.4 km.
Birding-Aus is on the Web at
www.shc.melb.catholic.edu.au/home/birding/index.html
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