Two Antennas (was RE: "Blunkett u-turn on data privacy plans")

[David Hansen]

On 5 Mar 2003 at 9:34, Brian Gladman wrote:

> Under normal 'field' conditions I agree

Those are the conditions under which I said that I considered such 
accuracies to be impossible. Apologies if I confused you or anyone 
else.

I agree with your views on the subject.

Two examples of spurious accuracy. One is quoting the length of 
bridges in millimetres, which I have seen on drawings of suspension 
bridges. Whoever did it doesn't have a clue about engineering. The 
second is in the 1913 proposals to electrifiy the railway line from 
Kings Cross in London. The overall length of a 16 coach train is 
quoted to the nearest 1/8 of an inch (or is it 1/16, I can't 
remember). Individual buffers could move by an inch or two without 
rough handling, a 15-30" change in the length of the train under 
normal operating.



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  David Hansen, Edinburgh | PGP email preferred-key number F566DA0E
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