Second

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Second

1. See: Second mortgage.

2. See: Second round.
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Finally, there was the Principe telescope, which recorded only a handful of stars, from which Eddington heroically derived a reading of 1.61 seconds of arc.
The eclipse that revealed the universe
722 (32.5%) subjects had 40-480 seconds of arc at distance, 996 (44.8%) had >480 seconds of arc, and 505 (22.7%) were uncooperative to the test.
Response to: Comment on "Exotropia Is the Main Pattern of Childhood Strabismus Surgery in the South of China: A Six-Year Clinical Review"
The single and double primes (' and ") are the symbols for minutes and seconds of arc.
Signs don't measure up; Letters

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