Ctesibius and Hero: Alexandrian Inventors

M1, T4: Turn your attention to two obscure Alexandrian inventors: Ctesibius and Hero. See how the inventions of the pump, improved water clock, and catapult of Ctseibius redefined pneumatics to shape the material world we live in today. And, look closely at the ingenuity behind some of Hero’s most elaborate inventions—from automated puppet theaters to holy water vending machines.