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3 antennas modeled with EZNEC
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February 7th 04, 07:44 AM
Wes Stewart
Posts: n/a
On 07 Feb 2004 02:59:54 GMT,
(Tdonaly) wrote:
[snip]
|
| This is an order of magnitude error. In the thirteenth century, the
|scholastics would tell their pupils that, since the earth is a ball,
|if you build two buildings side by side and use a plumb line to build
|each one, the buildings will be farther apart at the top than at the bottom.
|Also, if you have a swimming pool with a perfectly flat bottom, the
|center will be deeper than the sides because it's closer to the center
|of the earth.
When the Central Arizona Project canal was built they drilled a few
tunnels through mountains. They actually bored the holes with a
slight arch to follow the curvature of the Earth.
On the other hand near Apache Junction, AZ, they project the
subsidence that would occur during the 50 year engineered lifetime and
built the canal with higher banks so that when it sinks the correct
volume of water will still flow. If there is any in 50 years.
Sometimes the nits do count, but not in mobile antennas [g].
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