What is a dome?
Quatr.us answers questions

What is a dome?

Pantheon interior
Pantheon (Rome, ca. 120 AD)

Now suppose you want to make a dome. How would you do that using the idea of the arch?

arch rotating

This is harder, but basically a dome is an arch turned around and around. People did not get this idea until the time of the Roman Empire, around 100 AD. A famous early example of a dome is Hadrian's Pantheon in Rome. Another great dome from the ancient world is the one in Hagia Sophia, in Constantinople. Architects built Hagia Sophia under the Emperor Justinian in the 500s AD.

During the Islamic Empire, in West Asia, architects there built the Dome of the Rock mosque in Jerusalem in the 600s AD, and, in the 700s, the Great Mosque of Damascus, which also has a dome. In the 800s, the Abbasids built the Great Mosque at Kairouan in North Africa, also with a small dome.

Moscow church
A Moscow church from 1475

Russian churches took over this style in the 1200s AD, and they have small onion-shaped domes.

About 1100 AD, after a big gap, architects in Europe began to build domes again. One example is the baptistry of Pisa. A really big dome was the later Duomo of Florence (1418).

Bibliography and further reading:

Arches to Zigzags: An Architecture ABC, by Michael J. Crosbie (2000). Shows what an arch is, or a gable, or an eave. For younger kids.

Eyewitness: Building, by Philip Wilkinson, Dave King, and Geoff Dann (2000). Lavishly illustrated, like other Eyewitness books for kids, and with good explanations of most architectural terms.

Dome: A Study in the History of Ideas (Princeton Monographs in Art and Archaeology, No 25), by E. Baldwin Smith (1985). By a specialist, for adults.

What's an Arch?
What's a Barrel Vault?
What is an Apse?
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Professor Carr

Karen Eva Carr, PhD.
Assoc. Professor Emerita, History
Portland State University

Professor Carr holds a B.A. with high honors from Cornell University in classics and archaeology, and her M.A. and PhD. from the University of Michigan in Classical Art and Archaeology. She has excavated in Scotland, Cyprus, Greece, Israel, and Tunisia, and she has been teaching history to university students for a very long time.

Professor Carr's PSU page

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Now that the weather's nice, try some of these outdoor activities! How about bicycle polo, or archery for a Medieval Islam day? Or kite flying or making a compass for a day in Medieval China? How about making a shaduf for a day in Ancient Egypt? Holding an Ancient Greek Olympic Games or a medieval European tournament? Building a Native American wickiup?