A mathematical manual: or, delightful associate ... Published for the contemplation and diversion of gentlemen, and others, who are mathematically inclined / By E. Hatton, gent.

Edward Hatton

Date:: 1728

Credit: A mathematical manual: or, delightful associate ... Published for the contemplation and diversion of gentlemen, and others, who are mathematically inclined / By E. Hatton, gent. Source: Wellcome Collection.

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$E X A M P L E. Sun's Vines. Right Afc. Difference. Diff.ofDiff. 0 t 0 1 0 * June 1. 21 —og FI Jyfyi. 19 ~ g f 080—4L \ 111—00J ; 50~ir ] 0 f » 1—y, or 4-*. in . f (time. Jan. 1. 21—46 VS * 31. 22— gj'SS ■fl 293—00 i 324—20 2 ; 3^0 j E X A M P L E II. Sun's Vince. Right Affc. Difference. DifofDif 0 f 0 ' 0 Mar. i. 2i—40 X gp—00 21. 11—go T 10—go Dt’f. 1. 20—12 7' 259 —20 1 21. 10—yoVS 281—30 iS—go 22—10 g—40, ir ('time props. Now the Reafbn of the Difference is this: Suppoie another Sun at no Degrees of the Equinoctial to commence its diurnal Rota¬ tion from the fame Meridian at the fame \ Moment that our Sun dothg that Sun, or Mark in the Equinoctial, will pals round to the fame Point again in twenty-four Hours : But the Sun itfelf will return fometimes later to that fame Meridian, and confe- quently$