Anthemius of Tralles reportedly pranked his neighbor Zeno by shooting this substance through leather tubes in his parlor to create mini-earthquakes. For 10 point each:
[10e] Name this substance that powered Hero’s engine, also called the aeolipile (“ee-ah-low-pile”), much like the engines developed a millennia later to launch the industrial revolution.
ANSWER: steam [accept steam engine; prompt on water or gas]
[10h] This Roman engineer described the aeolipile in a treatise where he also lists utilitas, firmitas, and venustas as important attributes of the title discipline.
ANSWER: Vitruvius [or Marcus Vitruvius Pollio] (The treatise is De architectura.)
[10m] Vitruvius also described these siege weapons which used two thick cords to provide the tension needed to shoot a javelin. “Repeating” examples of these weapons were called polybolos.
ANSWER: ballista [or ballistae; prompt on bolt thrower]
<Lalit Maharjan, History - European - Classical> ~20295~ <Editor: Michael Bentley>