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

Cassini, moreover, set up an altazimuth in 1678, and employed from about 1682 a “parallactic machine,” provided with clockwork to enable it to follow the diurnal motion.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" by Various

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

The stile is made parallel with the earth's axis, and may be considered as coinciding with the axis of the sun's apparent diurnal motion.

From The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde by Various

The diurnal motion is compensated by motion about the polar axis only, the other being clamped.

From Pioneers of Science by Sir Oliver Lodge

The same thing is true of the opinion that he held for a time, that the progress of a ship westward, across the Atlantic, is retarded by the diurnal motion of the earth.

From Benjamin Franklin; Self-Revealed, Volume II (of 2) A Biographical and Critical Study Based Mainly on his own Writings by Wiliam Cabell Bruce

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