Advance in various scientific fields was evident in the Early Byzantine period: image from Kosmas Indikopleustes's Christian Topography, which records important information from his travels. Early 11th century.
Saint Catherine Monastery, Sinai, cod. 1186, fol. 146r.
Manafis, K., Sina: Hoi Thesauroi tis Ieras Monis Agias Aikaterinis, Ekdotike Athenon S.A., Athens 1990, p. 343, ill. 32.
© Saint Catherine Monastery, Sinai