Difference between revisions of "Page:Organum mathematicum libris IX. explicatum (1668).djvu/631"
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Idem Horologium Verticale ad elevationem poli graduum 50 aeque facile describes ope Regulae Sciathericae, sic:<br> | Idem Horologium Verticale ad elevationem poli graduum 50 aeque facile describes ope Regulae Sciathericae, sic:<br> | ||
I. Fac, ut antea, duas rectas A B, C D, secantes se perpendiculariter in E.<br> | I. Fac, ut antea, duas rectas A B, C D, secantes se perpendiculariter in E.<br> | ||
| − | II. In facie anteriore Regulae B C D E, elige spatiolum septimum et octavum D E H I, et omnia intervalla horaria inter horam | + | II. In facie anteriore Regulae B C D E, elige spatiolum septimum et octavum D E H I, et omnia intervalla horaria inter horam<noinclude><references/> {{TurnPage}}</noinclude> |
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Latest revision as of 15:53, 6 May 2020
HOrologium Verticale Australe, in plano mobili delineatum, ita colloari debet, it respliciat recta in Austrum, hoc est, planum Horologii sit parallerum plano Verticali primario, et recta A B sit perpendicularis ad Horizontem, recta C D eidem Horizonti parallela.
Non doceo modum delineandi Verticalia Borealia, quoniam raro sunt in su. Qui volet cum scire, legat Cursum Mathematicum, aut alios Horiographos.
Si in Horologio Verticali interlligatur triangulum F E K esse elevatum, et insistere perpendiculariter plano verticali, in quo Horologium delineatum est; punctum K repraesentat centrum Mindi, reto quod(nostro modo concepiendi) distat planum tantum, quanta est longitudo styli K I; recta vero K F repraesetat axem Mundi, quae cum I K facit angulum altitudinis poli 50 graduum in nostro exemplo, cum E F vero angulum complemento, seu graduum 40; et recta K E semidiametrum Aequatoris, faciens cum F E angulum 50 graduum, at cum recta F K angulum rectum in centro Mundi K.
Describere Horologium Verticale Astronomicum,
Idem Horologium Verticale ad elevationem poli graduum 50 aeque facile describes ope Regulae Sciathericae, sic:
I. Fac, ut antea, duas rectas A B, C D, secantes se perpendiculariter in E.
II. In facie anteriore Regulae B C D E, elige spatiolum septimum et octavum D E H I, et omnia intervalla horaria inter horam
