Science > Sciences naturelles
Cadran solaire


Anglais uniquement
Disponible le
- 2009-04-29
Format
< Configurer l'imprimante >
Papier recommandé
- Papier Photo Mat
Qualité d'impression
- Haute
Sens de l'impression
- Portrait
Mise en page
- Même agrandissement
Agrandissement/
Réduction
- aucun























The Earth receives most of its energy from the Sun, the source of energy for all life. Measuring time, a task central to our daily lifestyle, is based on the relationship between the Sun and Earth. Since the age of ancient civilizations, people are believed to have used the light and shadows created by the sun to measure time. The sundial has been used since antiquity as a device for measuring time.Sundials are classified into one of four main categories: horizontal, vertical, circular, and cylindrical. Each category in turn includes various subtypes. This papercraft model is modeled on a horizontal sundial.Use this model to see how well it matches the actual time or to check time differences with other cities and latitudinal differences.