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<div class="moz-cite-prefix">+1 ...<br>
It is like the length of a road .. roads twist and turn so the
length is longer than the straight line distance. <br>
The 'depth' of a tunnel is the straight line distance, not the
distance you travel by going along it as it may twist and turn. <br>
<br>
I am afraid 'English' words have many meanings! It may have been
better to define vertical depth as a negative height value e.g.<br>
height=-15 would be a 'depth' of 15 metres.. too late now.<br>
<br>
On 12-May-17 06:02 PM, Colin Smale wrote:<br>
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<p>Then I would suggest "length" is what you mean here, as it has
no direct relation with the distance from the surface.</p>
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<p>On 2017-05-12 09:54, Michal Fabík wrote:</p>
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<div class="gmail_quote">On Fri, May 12, 2017 at 9:32 AM,
Colin Smale <span><<a
href="mailto:colin.smale@xs4all.nl"
moz-do-not-send="true">colin.smale@xs4all.nl</a>></span>
wrote:
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<p>B) the distance one would have to travel to reach
the end of the adit</p>
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<div>This. Any straight-line distance can be determined
reasonably easily from a map, using its scale and a
piece of string. A length of a twisty path, not so much.
Granted, adits aren't usually _that_ twisty, but
entering a mine is always a potentially hazardous
undertaking and it's important to have as much useful
information at hand as possible.</div>
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-- <br>
<div class="gmail_signature">Michal Fabík</div>
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