function delay = distance2delay(distance)
%
% file:      	distance2delay.m, (c) Matthew Roughan, Tue Mar 10 2009
% created: 	Tue Mar 10 2009 
% author:  	Matthew Roughan 
% email:   	matthew.roughan@adelaide.edu.au
% 
% Distance2delay takes a distance in km, and converts this into a propagation
% delay (in seconds) for a packet travelling in fibre. It is only approximate because
% my figure for the speed of light in fibre is rough, and there is not transmision
% delay included.
%
% Note that the function should work on a vector or matrix of inputs.
%
%
delay = distance / 200000;
