Portal:Ancient Egypt/Did you know/11

• ... that the Fayum mummy portraits (pictured) are stunningly realistic portraits that were attached the upper class mummies in Roman Egypt?

• ... that in the 3rd century BC Eratosthenes used arc measurement between Alexandria and Syene (modern Aswan) to accurately calculate Earth's circumference?

• ... that arguably only two empires, the Roman Empire and the Ottoman Empire, separate Ancient Egypt from World War I?