Byzantine science

The Byzantine Empire was a powerful state that lasted from about the year 330 to 1453. During this time, people in the empire made many important discoveries and studied science carefully. They helped keep old knowledge alive and share it with other parts of the world.

Byzantine scientists and thinkers saved and copied many books and ideas from ancient times. They shared these ideas with people in the Islamic world and later with Italy during the Renaissance. This sharing of knowledge helped new discoveries and inventions to grow.

The Byzantines were also good at creating new technology. They built amazing art, architecture, and literature and made progress in many areas. Their work helped build a rich and wise culture that influenced the world for many years. Their efforts in science and technology were important steps in the history of human learning.

Classical and ecclesiastical studies

Byzantine science was closely connected to ancient learning and ideas. Many important scholars worked within the Church, helping keep old writings alive. The Byzantine Empire kept studying ancient subjects thanks to schools like the University of Constantinople and the Patriarchical Academy. These schools taught many subjects, not just religious ones.

Monasteries focused mainly on religious texts, but other scholars copied and studied ancient books. Because of their work, much of what we know about ancient Greece and Rome would have been lost without the efforts of these scribes and scholars in Constantinople.

Architecture

Pendentive architecture, a special way to support a dome using rounded shapes in the corners, was invented by the Byzantine Empire. People first tried this idea in the 200s, but it wasn't until the 6th century that the Byzantine Empire showed just how great it could be.

Timekeeping

The Byzantines made advanced portable timekeeping tools. One early Byzantine sundial had moving parts that showed the time, day of the week, months, and moon phases, using symbols of planets. Pieces of this small device are kept in the Science Museum in London. Other portable sundials from that time have also been found, like a bronze one from Aphrodisias in Asia Minor. When the emperor traveled, he carried a small silver time tool—probably an hourglass—to help track the night, while a bronze time tool stayed outside with his staff.

Mathematics

Byzantine scientists kept the work of ancient Greek mathematicians alive and used math in real life. In the early days of Byzantium, from the 5th to 7th century, two smart people named Isidore of Miletus and Anthemius of Tralles used math to build the amazing Hagia Sophia church. This church was very special because of its unique shape and tall height. Later, during the middle Byzantine time, from the 8th to 12th century, mathematicians like Michael Psellos thought math was a great way to understand the world around them.

Physics

John Philoponus, also known as John the Grammarian, was an important thinker who questioned ideas about how things fall. His work inspired later scientists, including Galileo Galilei, who used Philoponus's ideas to understand physics better.

The Byzantine Empire was also home to new inventions, like the ship mill, which used flowing water to grind grains. They understood how to control water movement, as shown by a special throne that could move up and down. By the 9th century, the Byzantines were using paper and had big libraries that helped keep old knowledge safe.

Astronomy

The Byzantine Empire made important contributions to the study of stars and planets. They used ideas from older times and improved them, creating models that showed how the Moon and Mercury moved across the sky. These models centered around the Earth, but they included new and better ways to understand the paths of these planets.

One famous Byzantine scientist, Nicephorus Gregoras, worked in the 1300s and studied the stars. Another scientist, Symeon Seth, showed that the Earth is round. He explained that when it is afternoon in one place, like Persia, it is still morning in another place, like Byzantine lands. If the Earth were flat, we would see all the same stars everywhere, but we do not—some stars are only seen in the north and not in the south. This helped prove that our world is a sphere.

Medicine

Main article: Byzantine medicine

Byzantine doctors made important advances in medicine, building on the work of earlier Greek thinkers like Galen. Their ideas and practices influenced later doctors in the Islamic world and during the Renaissance in Europe. One big idea they introduced was the hospital, a place where people could go to get medical care, inspired by the kindness taught in their faith.

These doctors also discovered new ways to understand health problems. For example, they began using a method called uroscopy — looking at urine — to help figure out what was wrong with a patient, even though they didn’t have tools like microscopes. Their books and teachings, like those from Paul of Aegina and Nicholas Myrepsos, were studied for many years after. One interesting story tells of doctors in Constantinople who tried to help conjoined twins, showing their skill and care even though the results were not perfect.

Weaponry

The Byzantine Empire created some amazing weapons that helped protect their cities and win battles. One famous weapon was called Greek fire, a special burning liquid used in naval battles. It could keep burning even on water, giving the Byzantines an edge in fights, especially when defending Constantinople.

They also made early versions of grenades and flamethrowers. Later, they invented the trebuchet, a big machine that could throw heavy objects to break down enemy walls. These clever inventions were used by many armies after the Byzantine times.

Byzantine and Islamic science

During the Middle Ages, there was a lot of sharing of ideas between the Byzantine Empire and the Islamic world. At first, the Byzantine Empire helped the Islamic world by giving them ancient Greek books about stars, numbers, and thinking. Later, when the Islamic world became a big place for learning, Byzantine scientists translated their books into Greek.

Byzantine scientists also used some Arabic words for science ideas. They helped share both ancient Greek knowledge and new Arabic knowledge with Europe. Some think a famous European scientist might have learned about a special star-moving idea from these shared books. Byzantines were also very clever with machines, making things like moving birds and singing clocks, showing off their skills to visitors. They even had a system of signal fires to send messages across long distances.

Humanism and Renaissance

Byzantine scholars and artists had great knowledge and skill, similar to those in Italy at the time. Many Italian scholars learned from Byzantine teachers like Barlaam and Bessarion, who became important figures in the Italian Renaissance. The Byzantines helped spread ideas and inspired Italian artists.

Even though the empire faced challenges, it still saw growth in science and literature. This period, called the "Palaeologean" or "Last Byzantine Renaissance," included famous thinkers like Maximus Planudes and Manuel Moschopoulus. The city of Trebizond became a key place for studying subjects like astronomy, mathematics, and medicine. Byzantine teachers played a big role in sharing ancient Greek learning with Italy.