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Ancient
Bristlecone Pines
Tim Dolan
Bristlecone pines include the
oldest living trees in the world. They have been
used to calibrate carbon-14 dating systems.
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Words
That
Survive
Sheldon Greaves, Ph.D.
They had been digging
in this mound since 1964, and after four
sun-parched years of excavations, archaeologists
from the University of Rome found a cuneiform
tablet written in Akkadian that identified
the name of the ancient city as Ebla.
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The
Centennial of the Crystal Radio Receiver
Laszlo Morocz
Copyright 2006 by Laszlo Morocz
Just over 100 years
ago, Greenleaf Whittier Pickard (Fig.
1) received U.S. patent number 836,531
for one of the pivotal pieces of modern
technology, the solid state silicon detector.
This early silicon diode was the direct
ancestor of all of today's silicon semiconductor
devices, from the simple rectifier to
the multimillion transistor CPU chip.
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This
Week at Hilton Pond
Bill Hilton Jr.
Executive Director
Hilton Pond Center for Piedmont Natural
History
York , South Carolina 29745 USA
Although we've banded
3,410 ruby-throated hummingbirds in York,
South Carolina and had many return in
later years, it is VERY seldom anyone
encounters one of our hummers elsewhere.
Thus, we were ecstatic "This Week
at Hilton Pond" when we got word
of a ruby-throat found in far-off Alabama
during this year's fall migration.
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