Stamp: Table Sundial (1750) (Germany, Democratic Republic 1983)
Table Sundial (1750) (Germany, Democratic Republic 1983)
07 June (Germany, Democratic Republic ) within release Sand And Sun From The State Mathematical-Physical Salon, Dre goes into circulation Stamp Table Sundial (1750) face value 30 East German pfennig
| Stamp Table Sundial (1750) in catalogues | |
|---|---|
| Michel: | Mi:DDR 2799 |
| Yvert et Tellier: | Yt:DDR 2442 |
Stamp is vertical format.
Also in the issue Sand And Sun From The State Mathematical-Physical Salon, Dre:
- Stamp - Kanzelsanduhr (1674) face value 5;
- Stamp - Kanzelsanduhr (around 1700) face value 10;
- Stamp - Table Sundial (1611) face value 20;
- Stamp - Table Sundial (1750) face value 30;
- Stamp - Table Sundial (c. 1760) face value 50;
- Stamp - Table Sundial (c. 1800) face value 85;
Stamp Table Sundial (1750) it reflects the thematic directions:
A sundial is a horological device that tells the time of day (referred to as civil time in modern usage) when direct sunlight shines by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the dial) and a gnomon, which casts a shadow onto the dial. As the Sun appears to move through the sky, the shadow aligns with different hour-lines, which are marked on the dial to indicate the time of day. The style is the time-telling edge of the gnomon, though a single point or nodus may be used. The gnomon casts a broad shadow; the shadow of the style shows the time. The gnomon may be a rod, wire, or elaborately decorated metal casting. The style must be parallel to the axis of the Earth's rotation for the sundial to be accurate throughout the year. The style's angle from horizontal is equal to the sundial's geographical latitude.
