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4-1000A
Wikipedia Bot
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Physics
Concepts in physics
Physical phenomena
Vacuum
Vacuum tubes
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The expression "
4-1000A
" appears to be
a
mathematical operation involving
subtraction
, where
4
is subtracted from 1000A. However, without additional
context
, it is unclear what "
A
" represents.
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Vacuum tubes
Vacuum
Physical phenomena
Concepts in physics
Physics
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