Description: NASS North American Sundial Society for sundials, gnomonics, history of sundials, theory of sundials, making sundials, using sundials, sundial education, teaching sundials, sundial curriculum, sundial construction, sundial design, sun and shadows, solar analemma, analemma calculation, equinox, solstice, and computing equation of time
Keywords: NASS, sundials, gnomonics, cadrans, cadrans solaires, sol cadrans, orologi solari e meridiane, sonnenuhr, sonnenuhren, slunecni hodiny, horizontal dial, vertical dial, equatorial dial, polar dial, ring dial, armillary, analemma, equinox, solstice, analemmatic, equation of time
Science Astronomy Calendars and Timekeeping Sundials 网站
2024年12月20日