Noon mark
The Noon mark is a type of sundial that at its simplest is a vertical line on a south facing wall or a north-south line on a horizontal pavement. When the shadow of a point (or a projected image of the Sun) crosses the line it will be midday. Noon in local standard time is defined as when the sun is overhead, however clocks and watches use mean time which varies from standard time by a few minutes each day. The difference is calculated using the equation of time and this can be shown on the noon mark by drawing an analemma, or using a correction table.
Noon mark
The Noon mark is a type of sundial that at its simplest is a vertical line on a south facing wall or a north-south line on a horizontal pavement. When the shadow of a point (or a projected image of the Sun) crosses the line it will be midday. Noon in local standard time is defined as when the sun is overhead, however clocks and watches use mean time which varies from standard time by a few minutes each day. The difference is calculated using the equation of time and this can be shown on the noon mark by drawing an analemma, or using a correction table.
has abstract
Een meridiaanlijn is een soort ...... nkele tientallen) meters telt.
@nl
Ein Mittagsweiser zeigt mit Hi ...... piel auf Bahnhöfen – justiert.
@de
En science, une ligne méridien ...... « méridiennes astronomiques ».
@fr
La Meridiana solar es un instr ...... os e Iglesias para su trazado.
@es
La meridiana in senso proprio ...... n importanti edifici pubblici.
@it
The Noon mark is a type of sun ...... , or using a correction table.
@en
正午標是日晷的一種,最簡單的就是在南向牆面上的一條垂直線,或 ...... 時差,可以經由繪製日行跡,或使用校正表標示在正午標上來修正。
@zh
thumbnail
Wikipage page ID
31,790,496
Wikipage revision ID
677,921,303
subject
hypernym
comment
Een meridiaanlijn is een soort ...... nkele tientallen) meters telt.
@nl
Ein Mittagsweiser zeigt mit Hi ...... n ausgewählten Mittagswert an.
@de
En science, une ligne méridien ...... artir de la trace du méridien.
@fr
La Meridiana solar es un instr ...... os e Iglesias para su trazado.
@es
La meridiana in senso proprio ...... n importanti edifici pubblici.
@it
The Noon mark is a type of sun ...... , or using a correction table.
@en
正午標是日晷的一種,最簡單的就是在南向牆面上的一條垂直線,或 ...... 時差,可以經由繪製日行跡,或使用校正表標示在正午標上來修正。
@zh
label
Meridiaanlijn
@nl
Meridiana (indicatore)
@it
Meridiana solar
@es
Mittagsweiser
@de
Méridienne (gnomonique)
@fr
Noon mark
@en
正午標
@zh