prime vertical
Britishnoun
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.
Sun Sight In order to make this a valuable sight for longitude it should be taken when the sun is on or as near as possible to the prime vertical.
From Lectures in Navigation by Draper, Ernest Gallaudet
The transit instrument is also used in the prime vertical for the determination of latitudes.
From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various
The sun might be observed for this purpose during the summer months, at moments when calculation showed that he should be due east or west, or crossing what is technically the prime vertical.
From The Contemporary Review, Volume 36, September 1879 by Various
If your A.M. sight was taken when the sun was on or near the prime vertical, a change in latitude at noon will make no change in longitude.
From Lectures in Navigation by Draper, Ernest Gallaudet
Take the morning sight for longitude when the sun is on or as near as possible to the prime vertical.
From Lectures in Navigation by Draper, Ernest Gallaudet
Definitions 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.
