diurnal motion

American  

noun

Astronomy.

1. the apparent daily motion, caused by the earth's rotation, of celestial bodies across the sky.

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diurnal motion British  

noun

1. motion that occurs during the day or daily, such as the diurnal rotation of the celestial sphere

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Example Sentences

See Examples For:

diurnal motion

If the earth then, had no other than its diurnal motion, we should have 366 days in the year.

From Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained by Thomas P. Jones

A planet is said to be accelerated when its actual diurnal motion exceeds its mean.

From The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. by Sir Edward Belcher

Otherwise, we should still believe, as, till some few centuries ago, the world did believe, that the diurnal motion was in the sun, and not in the earth.

From Hints on Horsemanship, to a Nephew and Niece or, Common Sense and Common Errors in Common Riding by George Greenwood

Instead of accompanying the earth in its diurnal motion eastward, it attended the stars in their apparent movement westward.

From Harper's New Monthly Magazine, Volume 1, No. 4, September, 1850 by Various

When you speak of the sun's motion, you mean, I suppose, his apparent motion, produced by the diurnal motion of the earth?

From Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained by Thomas P. Jones

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