托勒密在他的《便携用表》[來源請求]中给出了一个有助于天文学计算的实用工具。表中给出了包括计算太阳、月球和行星的位置,行星的升降以及日月食所需的全部数据。托勒密的《便携用表》为后世的天文学用表和zījes提供了一个很好的范例。在"Phaseis"(镶嵌星的升起)中托勒密给出了一个天文历法(parapegma)。这是一个以行星共同出现(hands)和消失现象为基础的恒星历法,这种天文年历的时间跨度超过了太阳年(over the course of the solar year)。
《天文学大成》 · 《阿基米德重写本》 · 《算術》 · 《圆锥曲线论》 · 《几何原本》 · On the Sizes and Distances (Aristarchus) · On Sizes and Distances (Hipparchus) · On the Moving Sphere · 《沙计算手册》
Ramiro Burr's New Blog - to go back: www.ramiroburr.com From Latin rock to reggaeton, boleros to blues,Tex-Mex to Tejano, conjunto to corridos and beyond, Ramiro Burr has it covered. If you have a new CD release, a trivia question or are looking for tour info, post a message here or e-mail Ramiro directly at: musicreporter@gmail.com Top Tejano songwriter Luis Silva dead of heart attack at 64 By Ramiro Burr on October 23, 2008 8:40 AM | Permalink | Comments (12) | TrackBacks (0) UPDATE: Luis Silva Funeral Service details released Visitation 4-9 p.m. Saturday, Rosary service 6 p.m. Saturday at Porter Loring, 1101 McCullough Ave Funeral Service 10:30 a.m. Monday St. Anthony De Padua Catholic Church, Burial Service at Chapel Hills, 7735 Gibbs Sprawl Road. Porter Loring (210) 227-8221 Related New Flash: Irma Laura Lopez: long time record promoter killed in accident NewsFlash: 9:02 a.m. (New comments below) Luis Silva , one of the most well-known ...
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