A Dictionary of the English Language
                        A Digital Edition of the 1755 Classic by Samuel Johnson
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Equation

View Scan · View Transcription · from page 714

View Scan · View Transcription · from page 714

Equátion. n.s. [æquare, Latin.] The investigation of a mean proportion collected from the extremities of excess and defect, to be applied to the whole.

We are to find out the extremities on both sides, and from and between them the middle daily motions of the sun along the Ecliptick; and to frame tables of equation of natural days, to be applied to the mean motion of addition or substraction, as the case shall require. Holder on Time.

By an argument taken from the equations of the times of the eclipses of Jupiter's satellites, it seems that light is propagated in time, spending in its passage from the sun to us about seven minutes of time. Newton's Opt.

Sources: Holder, William (38) · Newton, Isaac (40)

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Cite this page: Johnson, Samuel. "Equation." A Dictionary of the English Language: A Digital Edition of the 1755 Classic by Samuel Johnson. Edited by Brandi Besalke. Last modified: December 3, 2011. http://johnsonsdictionaryonline.com/?p=8504.


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