. Mathematics, compiled from the best authors and intended to be the text-book of the course of private lectures on these sciences in the University at Cambridge [microform]. *^ Proceed as in drawing an east dial, except in assumingthe point C and making the angle ACD, which must be onthe left, and in numbering the hour lines, which are fromthe substile VII, VIII, &c. toward the south, the hours be-fore; VI being toward the north. Kote. This dial bhows the time of the afternoon. PROBLEM XI. To draw geometrically a south erect declining dial. EXAMPLE. The declination being 36° west, and the lat

---

. Mathematics, compiled from the best authors and intended to be the text-book of the course of private lectures on these sciences in the University at Cambridge [microform]. *^ Proceed as in drawing an east dial, except in assumingthe point C and making the angle ACD, which must be onthe left, and in numbering the hour lines, which are fromthe substile VII, VIII, &c. toward the south, the hours be-fore; VI being toward the north. Kote. This dial bhows the time of the afternoon. PROBLEM XI. To draw geometrically a south erect declining dial. EXAMPLE. The declination being 36° west, and the latitude of theplace 42° 2d 28 north ; required the construction of thedial. PIALING. dS7. V: Mhr ,....V . .\ --•,,..-/{

---

Size: 1790px × 1396px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade1800, bookidmathematicsc, bookyear1808