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scare the bejesus
immersion
1780s
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widow
take advantage
nouns
absconder
acacia pycnantha
fag out
hopper
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concave lens
concave lens
/kɒnˈkeɪv lɛnz/
noun
A lens such that a parallel beam of light passing through it is caused to diverge or spread out
(
concave lens
,
diverging lens
)
a lens such that a parallel beam of light passing through it is caused to diverge or spread out
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