[1] Its rich historiographical tradition preserved ancient knowledge upon which splendid art, architecture, literature and technological achievements were built.
Therefore, the monastic scriptoria expended most of their efforts upon the transcription of ecclesiastical manuscripts, while ancient-pagan literature was transcribed, summarized, excerpted, and annotated by laymen or clergy like Photios, Arethas of Caesarea, Eustathius of Thessalonica, and Bessarion.
[7] Byzantine scientists preserved and continued the legacy of the great Ancient Greek mathematicians and put mathematics in practice.
[8] In his Commentaries on Aristotle, Philoponus wrote: But this is completely erroneous, and our view may be corroborated by actual observation more effectively than by any sort of verbal argument.
[16] The concept of the hospital appeared in Byzantine Empire as an institution to offer medical care and possibility of a cure for the patients because of the ideals of Christian charity.
It was Byzantine physicians, such as Theophilus Protospatharius, who realised the diagnostic potential of uroscopy in a time when no microscope or stethoscope existed.
It provided a technological advantage and was responsible for many key Byzantine military victories, most notably the salvation of Constantinople from two Arab sieges, thus securing the empire's survival.
Greek fire proper however was invented in c. 672 and is ascribed by the chronicler Theophanes to Kallinikos, an architect from Heliopolis in the former province of Phoenice.
[24][25][26] The first examples of hand-held flamethrowers occurred in the Byzantine Empire in the 10th century, where infantry units were equipped with hand pumps and swivel tubes used to project the flame.
Later as the caliphate and other medieval Islamic cultures became the leading centers of scientific knowledge, Byzantine scientists such as Gregory Chioniades, who had visited the famous Maragheh observatory, translated books on Islamic astronomy, mathematics and science into Medieval Greek, including for example the works of Ja'far ibn Muhammad Abu Ma'shar al-Balkhi,[29] Ibn Yunus, Al-Khazini (who was of Byzantine Greek descent),[30] Muhammad ibn Mūsā al-Khwārizmī[31] and Nasīr al-Dīn al-Tūsī (such as the Zij-i Ilkhani and other Zij treatises) among others.
The "philosopher" Leo of Thessalonika made for the Emperor Theophilos (829–842) a golden tree, the branches of which carried artificial birds which flapped their wings and sang, a model lion which moved and roared, and a bejewelled clockwork lady who walked.
[38] Leo the Mathematician has also been credited with the system of beacons, a sort of optical telegraph, stretching across Anatolia from Cilicia to Constantinople, which gave warning of enemy raids and was used as diplomatic communication.
[40] Despite the political, and military decline of these last two centuries, the empire saw a flourishing of science and literature, often described as the "Palaeologean" or "Last Byzantine Renaissance".
The academy at Trebizond, highly influenced by Persian sciences, became a renowned center for the study of astronomy, mathematics, and medicine attracted the interest of almost all scholars.
[40] In the final century of the empire, Byzantine grammarians were those principally responsible for carrying in person and in writing ancient Greek grammatical and literary studies to early Renaissance Italy, and among them Manuel Chrysoloras was involved over the never achieved union of the Churches.