@estherschindler medieval equipment for launching rocks. I thought it was a catapult but whatever.
@estherschindler Here is a short video showing the difference between catapult and trebuchet
Ah, but what about the difference between a ballista and an arbalest?
Well, they got torsion versus tension right.
@estherschindler I just found out tonight. #Jeopardy I have seen the word, never looked it up.
@estherschindler
Isn’t it the thing that slings rocks when they storm the castle?