...Each bird of prey is a balanced equation... 
William T. Hornaday 「Our Vanishing Wild Life」
...I cannot boast this placidity; I find that the change has not increased my peace of mind; hunting for ideas troubles the brain even more than hunting for the roots of an equation...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...The correct name for this difference betweenthe two kinds of solar time is the equation of time, butin the almanacs it is frequently marked "sun fast" or "sunslow...
George C. Comstock 「A Text-Book of Astronomy」
...Practically itis more convenient to use instead of this equation anotherform...
George C. Comstock 「A Text-Book of Astronomy」
...(The equation of the centre, discovered by Hipparchus...
Oliver Lodge 「Pioneers of Science」
... He was rather proudof them, seeing he had utterly forgotten now how to work decimalfractions, and could not have done a quadratic equation to save hislife...
Ethel Sybil Turner 「Seven Little Australians」
...In hisinvestigation of the Lunar theory Tycho Brahé discovered the Moon’sannual equation, a yearly effect produced by the Sun’s disturbingforce as the Earth approaches or recedes from him in her orbit...
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」
...If we takethe mean distance of the earth from the sun as the unit ofdistance, and the year as the unit of time, we shall find byapplying the equation to the earth's motion, C=1...
George C. Comstock 「A Text-Book of Astronomy」
...This equation, which is the general mathematical expressionfor the law of gravitation, may be made to yieldsome curious results...
George C. Comstock 「A Text-Book of Astronomy」
...where Y denotes the given year, D the number of the day(date) in that year, and q and r are respectively the quotientand the remainder obtained by dividing the secondmember of the equation by7...
George C. Comstock 「A Text-Book of Astronomy」
...The slowness with which these bodies move when farfrom the sun is strikingly illustrated by an equation ofcelestial mechanics which for parabolic orbits takes theplace of Kepler's Third Law—viz...
George C. Comstock 「A Text-Book of Astronomy」
...Suppose an equation such as x = y to be given...
Oliver Lodge 「Pioneers of Science」
...The equation x2 + y2= 36 represents a circle of radius 6...
Oliver Lodge 「Pioneers of Science」
..." From this equation, if we have any distinctmethod of determining VE (and the next section gives such amethod), we can calculate x and thus roughly weigh the moon,since...
Oliver Lodge 「Pioneers of Science」
... fromthe above equation...
Oliver Lodge 「Pioneers of Science」
...The equation of time and the sidereal time of meannoon complete the ephemeris proper...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
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