Acroballistics | Bow to Early Ancient Artillery @Acroballistics | Uploaded 1 year ago | Updated 3 minutes ago
History and Mechanics of bows and bow powered artillery, the predecessor of torsion Engines.

sources:
atarn.org/chinese/khotan_bow.htm
https://www.google.gr/books/edition/Veterum_Mathematicorum_Athenaei_Bitonis/HH9nAAAAcAAJ?hl=en&gbpv=0
https://www.google.gr/books/edition/Poliorc%C3%A9tique_des_Grecs/K5HMdhWTnYkC?hl=en&gbpv=0
The Traditional Bowyer's Bible
Greek and Roman Artillery: Technical Treatises by Eric William Marsden
http://www.perseus.tufts.edu/hopper/text?doc=Perseus:abo:tlg,0032,006:4:2
http://www.perseus.tufts.edu/hopper/text?doc=urn:cts:greekLit:tlg0060.tlg001.perseus-eng1:14.50.4

youtube sources:

youtu.be/cH0Y0NCRuAo Ivar Malde
youtu.be/XsPfVemWVWU @Slingshotchannel
youtu.be/rUmZU51K0-o @HistoricalWeapons