second of arc
Americannoun
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
This was a significant technical challenge, since, even for the nearest stars, parallax angles are usually only a fraction of a second of arc.
From Textbooks ● Oct. 13, 2016
University of Toronto astronomers, give results for the bending of a stellar ray just grazing the sun's edge, within one-hundredth of a second of arc of Einstein's prediction that they would be deflected 1.75 seconds.
From Time Magazine Archive
Its length is equal to the distance of a star whose parallax is one second of arc; that is, one parsec is equal to about three and a quarter light-years.
From Astronomy: The Science of the Heavenly Bodies by David Peck Todd
Selenographical arc at the centre of the moon's surface, subtending an angle of one second of arc - 3 min.
From The Moon A Full Description and Map of its Principal Physical Features by Thomas Gwyn Elger
It includes 454,875 stars, nearly to the tenth magnitude, and their positions are reliable to about one second of arc.
From A Popular History of Astronomy During the Nineteenth Century Fourth Edition by Agnes M. (Agnes Mary) Clerke
Random Word
Spin the wheel and learn a new word!
Get a wordDefinitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
