Sundial: Did you mean...?

A 1st century CE sundial decorated with the likenesses of Helios, Dionysus, and Athena. Sundials were set up both in the public and in the private sphere in ancient Greece. The reconstructed indicator (gnomon) of the conical sundial is...

A Roman period sundial of the Greek hemispherical type. (Archaeological Museum of Piraeus)

Cheomseongdae (Chomsongdae) is a 7th-century CE observatory tower located in Gyeongju, the capital of the Silla Kingdom of ancient Korea. It is the oldest surviving astronomical observatory in East Asia and is listed as no. 31 on the official...

Mesopotamian science and technology developed during the Uruk period (circa 4000-3100 BCE) and the Early Dynastic period (circa 2900-2350/2334 BCE) of the Sumerian culture of southern Mesopotamia. The foundation of future Mesopotamian advances...

Korea, located on a large peninsula on the eastern coast of the Asian mainland, has been inhabited since Neolithic times. The first recognisable political state was Gojoseon in the second half of the first millennium BCE. From the 1st century...

The astrolabe is an astronomical instrument used from around the 6th century to measure time and position by determining the altitude of heavenly bodies like the Sun and certain stars. Measurements were taken in reference to the viewer's...

A sepoy was an Indian soldier in the armies of various states and European trading companies in the Indian subcontinent and then, from the second half of the 19th century, in the British Indian Army. Recruited from many different population...

The Three Kingdoms Period of ancient Korea (57 BCE – 668 CE) is so-called because it was dominated by the three kingdoms of Baekje (Paekche), Goguryeo (Koguryo), and Silla. There was also, though, a fourth entity, the Gaya (Kaya) confederation...

Machu Picchu is an Inca settlement located in the High Andes of Peru in the Urubamba Valley, north of Cuzco. The site, perched high above the Urubamba river, has been variously described as a fortress, imperial retreat and ceremonial precinct...

The Silla kingdom ruled south-eastern Korea during the Three Kingdoms period from the 1st century BCE to 7th century CE. The capital was Geumseong (Gyeongju) with a centralised government and hierarchical system of social ranks. The prosperity...