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I.
Effects on the Ground
The following effects of a high altitude test are predicted; there
probably will be others as well,
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2. Radio and Radar Blackout by X-Rays and X-Rays.
the air
test,
the
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all
in
miles
distances up to about 600
will lead
This
bomb.
the
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to a blackout of the reflection of electromagnetic waves from
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This blackout effect will be strong for tests from 200,
be
will
up, including those conducted above the atmosphere. It
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UNCLASSIFIED
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observable down to about 70, 000 feet test altitud
(At the lower
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;
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EM signal under 1, it identifies nuclear teats at high altitud
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